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E., Sneden, C., et al., “Commission 29: Stellar Kochukhov, O., Ryabchikova, T., & Piskunov, N., “No magnetic field variation Spectra”, 2009IAUTA..27..209P ADS with pulsation phase in the roAp star γ Equulei”, 2004A&A...415L..13K Lyra, W., Johansen, A., Klahr, H., & Piskunov, N., “Standing on the shoul- ADS ders of giants. Trojan Earths and vortex trapping in low mass self-gravitating Kochukhov, O., Bagnulo, S., Wade, G. A., et al., “Magnetic Doppler imaging of protoplanetary disks of gas and solids”, 2009A&A...493.1125L ADS 53 Camelopardalis in all four Stokes parameters”, 2004A&A...414..613K Piskunov, N., “Doppler imaging”, 2008PhST..133a4017P ADS ADS Lyra, W., Johansen, A., Klahr, H., & Piskunov, N., “Embryos grown in the dead Briquet, M., Aerts, C., Lüftinger, T., et al., “He and Si surface inhomogeneities zone. Assembling the first protoplanetary cores in low mass self-gravitating of four Bp variable stars”, 2004A&A...413..273B ADS circumstellar disks of gas and solids”, 2008A&A...491L..41L ADS Barklem, P. S., Stempels, H. C., Kochukhov, O., Piskunov, N., & O’Mara, Obbrugger, M., Heiter, U., Kupka, F., et al., “Vald”, 2008asvo.proc..215O B. J., “Balmer Lines and Effective Temperatures in Cool Stars”, ADS 2003csss...12.1103B ADS Ryabchikova, T., Kildiyarova, R., Piskunov, N., et al., “A comparative analy- Stempels, H. C. & Piskunov, N., “Probing Magnetospheric Infall onto CTTS sis of the laboratory and theoretical transition probabilities of the Fe-peak with Time-resolved Veiling Measurements.”, 2003csss...12..735S ADS elements for a new release of VALD”, 2008JPhCS.130a2017R ADS Stempels, H. C. & Piskunov, N., “The photosphere and veiling spectrum of T Heiter, U., Barklem, P., Fossati, L., et al., “VALD - an atomic and molecular Tauri stars”, 2003A&A...408..693S ADS database for astrophysics”, 2008JPhCS.130a2011H ADS Lueftinger, T., Kuschnig, R., Piskunov, N. E., & Weiss, W. W., “Doppler Snik, F., Jeffers, S., Keller, C., et al., “The upgrade of HARPS to a full-Stokes Imaging of the Ap star epsilon Ursae Majoris: Ca, Cr, Fe, Mg, Mn, Ti, Sr”, high-resolution spectropolarimeter”, 2008SPIE.7014E..0OS ADS 2003A&A...406.1033L ADS Piskunov, N., Rickman, H., & Gustafsson, B., “INTRODUCTION: Nobel Sym- Strassmeier, K. G., Hofmann, A., Woche, M. F., et al., “PEPSI spectro- posium 135: Physics of Planetary Systems (18 22 June 2007, Lidingö, Stock- polarimeter for the LBT”, 2003SPIE.4843..180S ADS holm, Sweden)”, 2008PhST..130a1001P ADS Knoglinger, P., Nesvacil, N., Kupka, F., et al., “Tools and Methods for Abun- Semenko, E. A., Sachkov, M. E., Ryabchikova, T. A., Kudryavtsev, D. O., & dance Analysis”, 2003IAUS..210P.E66K ADS Piskunov, N. E., “Abundance analysis and searching for nonradial pul- Sokoloff, D. & Piskunov, N., “Parametric Resonance and Magnetic Activity in sations in the atmosphere of the chemically peculiar star HD 115708”, Close Binary Systems”, 2003IAUS..210P.E43S ADS 2008AstL...34..413S ADS Barklem, P. S. & Piskunov, N., “Hydrogen Balmer Lines as Probes of Stellar Lüftinger, T., Kochukhov, O., Ryabchikova, T., et al., “3D atmo- Atmospheres”, 2003IAUS..210P.E28B ADS spheric structure of the prototypical roAp star HD 24712 (HR1217)”, Valyavin, G., Kochukhov, O., & Piskunov, N., “The Influence of the Global 2008CoSka..38..335L ADS Magnetic Field Evolution on the Structure of Atmospheres of Early-Type Lyra, W., Johansen, A., Klahr, H., & Piskunov, N., “Global magnetohydrody- Stars”, 2003IAUS..210P.A14V ADS namical models of turbulence in protoplanetary disks. I. A cylindrical poten- Piskunov, N., “Round Table Summary: Radiative Transfer Problems”, tial on a Cartesian grid and transport of solids”, 2008A&A...479..883L 2003IAUS..210..107P ADS ADS , “Modelling of Stellar Atmospheres”, 2003IAUS..210.....P ADS

3 Kochukhov, O., Piskunov, N., Bagnulo, S., et al., “Magnetic Doppler Imaging Gelbmann, M., Ryabchikova, T., Weiss, W. W., et al., “Abundance analysis of of Chemically Peculiar Stars”, 2003ASPC..307..549K ADS roAp stars. V. HD 166473”, 2000A&A...356..200G ADS Piskunov, N. & Kochukhov, O., “Magnetic Doppler Imaging of Solar-type Barklem, P. S., Piskunov, N., & O’Mara, B. J., “VizieR Online Data Cat- Stars”, 2003ASPC..307..539P ADS alog: Broadening of metallic lines by H collisions (Barklem+ 2000)”, Lueftinger, T., Ryabchikova, T. A., Weiss, W. W., et al., “Doppler and Zeeman 2000yCat..41420467B ADS Doppler Imaging of roAp Stars”, 2003ASPC..305...92L ADS Barklem, P. S., Piskunov, N., & O’Mara, B. J., “A list of data for the broadening Piskunov, N. E. & Kochukhov, O., “Magnetic Doppler Imaging of Early-Type of metallic lines by neutral hydrogen collisions”, 2000A&AS..142..467B Stars”, 2003ASPC..305...83P ADS ADS Moss, D., Piskunov, N., & Sokoloff, D., “Nonaxisymmetric cool spot distribu- Barklem, P. S., Piskunov, N., & O’Mara, B. J., “Self broadening of hydrogen tions and dynamo action in close binaries”, 2002A&A...396..885M ADS lines: initial results”, 2000A&A...355L...5B ADS Sokoloff, D. & Piskunov, N., “Swing excitation and magnetic activity in close Piskunov, N., Ryabchikova, T. A., & Weiss, W. W., “The news about Vienna binary systems”, 2002MNRAS.334..925S ADS Atomic Line Data Base”, 2000mfcp.proc..194P ADS Stempels, H. C. & Piskunov, N., “Spectroscopy of T Tauri stars with UVES. Piskunov, N., “The new magnetic Doppler imaging code”, Observations and analysis of RU Lup”, 2002A&A...391..595S ADS 2000mfcp.proc...96P ADS Piskunov, N., “Spectropolarimetry of starspots”, 2002AN....323..257P Kudryavtsev, D. O., Piskunov, N. E., Romanyuk, I. I., Chountonov, G. A., & ADS Shtol’, V. G., “Spectral and polarimetric observations of the star HD 37022 Kochukhov, O., Piskunov, N., Ilyin, I., Ilyina, S., & Tuominen, I., “Doppler (θ1 Ori C)”, 2000mfcp.proc...64K ADS Imaging of stellar magnetic fields. III. Abundance distribution and magnetic Kupka, F. G., Ryabchikova, T. A., Piskunov, N. E., Stempels, H. C., & 2 field geometry of alpha CVn”, 2002A&A...389..420K ADS Weiss, W. W., “VALD-2 – The New Vienna Atomic Line Database”, Kochukhov, O. & Piskunov, N., “Doppler Imaging of stellar magnetic fields. II. 2000BaltA...9..590K ADS Numerical experiments”, 2002A&A...388..868K ADS Linsky, J. L., Redfield, S., Wood, B. E., & Piskunov, N., “The Three- Piskunov, N. E. & Valenti, J. A., “New algorithms for reducing cross-dispersed dimensional Structure of the Warm Local Interstellar Medium. I. Methodol- echelle spectra”, 2002A&A...385.1095P ADS ogy”, 2000ApJ...528..756L ADS Barklem, P. S., Stempels, H. C., Allende Prieto, C., et al., “Detailed analysis of Kuschnig, R., Ryabchikova, T. A., Piskunov, N. E., Weiss, W. W., & Gelbmann, Balmer lines in cool dwarf stars”, 2002A&A...385..951B ADS M. J., “Multi element Doppler imaging of AP stars. I. He, Mg, Si, CR and Fe Ryabchikova, T., Piskunov, N., Kochukhov, O., et al., “Abundance stratification surface distribution for CU Virginis”, 1999A&A...348..924K ADS and pulsation in the atmosphere of the roAp star boldmath gamma Equulei”, Kupka, F., Piskunov, N., Ryabchikova, T. A., Stempels, H. C., & Weiss, 2002A&A...384..545R ADS W. W., “VALD-2: Progress of the Vienna Atomic Line Data Base”, Weiss, W. W., Ryabchikova, T. A., Savanov, I., et al., “Spectroscopy of Rapidly 1999A&AS..138..119K ADS Oscillating Ap Stars”, 2002ASPC..259..280W ADS Ryabchikova, T., Piskunov, N., Savanov, I., Kupka, F., & Malanushenko, V., “Eu Piskunov, N. & Kochukhov, O., “Doppler Imaging of stellar magnetic fields. I. III identification and Eu abundance in CP stars”, 1999A&A...343..229R Techniques”, 2002A&A...381..736P ADS ADS Wade, G. A., Bagnulo, S., Kochukhov, O., et al., “VizieR Online Data Cat- Strokovsky, E. A., Azhgirey, L. S., Malinina, L. V., et al., “Study of alog: LTE spectrum synthesis in magnetic atmospheres (Wade+, 2001)”, Delta and Roper resonances excitation in light nuclei induced reactions”, 2001yCat..33740265W ADS 1999fbpp.conf..495S ADS , “LTE spectrum synthesis in Wade, G. A., Bagnulo, S., Kochukhov, O., et al. Piskunov, N., “Stellar activity and magnetism”, 1999anot.conf..204P magnetic stellar atmospheres. The interagreement of three independent po- ADS larised radiative transfer codes”, 2001A&A...374..265W ADS Eversberg, T., Moffat, A. F. J., Debruyne, M., et al.: 1999, Observing Hot Stars Lamzin, S. A., Stempels, H. C., & Piskunov, N. E., “Formation of in all Four Stokes Parameters, Vol. 523, 107 1999LNP...523..107E ADS Fe X-Fe XIV coronal lines in the accretion shock of T Tauri stars”, Piskunov, N.: 1999, Modeling magnetic fields on stars other than the Sun, Vol. 2001A&A...369..965L ADS 243, 515–525 1999ASSL..243..515P ADS Cowley, C. R., Hubrig, S., Ryabchikova, T. A., et al., “The core-wing anomaly of Eversberg, T., Moffat, A. F. J., Debruyne, M., et al., “The William-Wehlau cool Ap stars. Abnormal Balmer Profiles”, 2001A&A...367..939C ADS Spectropolarimeter: Observing Hot Stars in All Four Stokes Parameters”, Piskunov, N. & Kupka, F., “Model Atmospheres with Individualized Abun- 1998PASP..110.1356E ADS dances”, 2001ApJ...547.1040P ADS Piskunov, N. & Kochukhov, O.: 2001, Magnetic Doppler Imaging of Chemically Valenti, J. A., Piskunov, N., & Johns-Krull, C. M., “Spectral Synthesis of TiO 1998ApJ...498..851V Peculiar Stars, Vol. 573, 238 2001LNP...573..238P ADS Lines”, ADS Johns-Krull, C. M., Valenti, J. A., Piskunov, N. E., Saar, S. H., & Hatzes, A. P., Linsky, J. L., Piskunov, N., & Wood, B. E., “Astronephography: the 3-D shape “New Measurements of T Tauri Magnetic Fields: Testing Magnetospheric Ac- of the Local Interstellar Cloud”, 1998AAS...192.1018L ADS cretion”, 2001ASPC..248..527J ADS Piskunov, N., Stempels, H. C., Ryabchikova, T. A., Malanushenko, V., Wade, G. A., Ryabchikova, T. A., Bagnulo, S., & Piskunov, N., “Chemical & Savanov, I., “Multi-element Doppler imaging of kappa PSC”, Stratification in Magnetic Ap Stars”, 2001ASPC..248..373W ADS 1998CoSka..27..482P ADS Kochukhov, O., Ryabchikova, T., & Piskunov, N., “Time-Resolved Spectroscopy Kuschnig, R., Wade, G. A., Hill, G. M., & Piskunov, N., “IOTA of the roAp Star γ Equ”, 2001ASPC..248..341K ADS Cas: Multi-element Doppler imaging and magnetic field geometry”, Kochukhov, O., Piskunov, N., Ilyin, I., Ilyina, S., & Tuominen, I., “Magnetic 1998CoSka..27..470K ADS Doppler Imaging of α CVn”, 2001ASPC..248..321K ADS Wade, G. A., Donati, J. F., Mathys, G., & Piskunov, N., “Linear spectropo- Piskunov, N., “Magnetic Doppler Imaging of CP Stars”, larimetry of AP stars: a new degree of constraint on magnetic structure”, 2001ASPC..248..293P ADS 1998CoSka..27..436W ADS Kochukhov, O., Piskunov, N., Valenti, J., & Johns-Krull, C., “The Search and Piskunov, N., “Radiative transfer in Doppler Imaging”, Modelling of Magnetic Fields on M Dwarfs”, 2001ASPC..248..219K 1998CoSka..27..374P ADS ADS Ryabchikova, T., Piskunov, N., Savanov, I., & Kupka, F., “EU III identification Valenti, J. A., Johns-Krull, C. M., & Piskunov, N. E., “Using FeH to Measure and EU abundance in cool CP stars”, 1998CoSka..27..359R ADS Magnetic Fields on Cool Stars and Brown Dwarfs (CD-ROM Directory: con- Kupka, F. & Piskunov, N. E., “CP star atmospheres based on individual ODFs”, tribs/valenti)”, 2001ASPC..223.1579V ADS 1998CoSka..27..228K ADS Piskunov, N., Vincent, A., Duemmler, R., Ilyin, I., & Tuominen, I., “Doppler Piskunov, N., “INVERS10: A New Code for Magnetic Doppler Imaging”, Imaging of Eclipsing Binary Systems ER Vul and TY Pyx (CD-ROM Direc- 1998ASPC..154.2029P ADS tory: contribs/piskunov)”, 2001ASPC..223.1285P ADS Valenti, J. A., Johns-Krull, C. M., & Piskunov, N., “Observational Constraints Kochukhov, O. P., Piskunov, N. E., Valenti, J. A., & Johns-Krull, C. M., “The on the Dynamo in Flare Stars”, 1998ASPC..154.1357V ADS Search and Modeling of Magnetic Fields on M dwarfs (CD-ROM Directory: Pettersson, B., Stempels, E., & Piskunov, N., “A Fiber-Linked Four Stokes- contribs/kochuk)”, 2001ASPC..223..985K ADS Parameter Polarimeter for the SOFIN Spectrometer on the Nordic Optical Stempels, H. C., Piskunov, N., & Barklem, P. S., “Recent Develop- Telescope”, 1998ASPC..152..343P ADS ments of the VALD Database (CD-ROM Directory: contribs/stempels)”, Ryabchikova, T. A., Piskunov, N. E., Kupka, F., & Weiss, W. W., “The 2001ASPC..223..878S ADS Vienna Atomic Line Database : Present State and Future Development”, Barklem, P. S., Kochukhov, O., Piskunov, N., O’Mara, B. J., & Stempels, 1997BaltA...6..244R ADS H. C., “Hydrogen Line Formation in Cool Stars (CD-ROM Directory: con- Piskunov, N., Wood, B. E., Linsky, J. L., Dempsey, R. C., & Ayres, R., tribs/barklem1)”, 2001ASPC..223..766B ADS “Local Interstellar Medium Properties and Deuterium Abundances for the Barklem, P. S., Piskunov, N., & O’Mara, B. J., “Self-broadening in Balmer line Lines of Sight toward HR 1099, 31 Comae, β Ceti, and β Cassiopeiae”, wing formation in stellar atmospheres”, 2000A&A...363.1091B ADS 1997ApJ...474..315P ADS

4 Ryabchikova, T. A., Pavlova, V. M., Davydova, E. S., & Piskunov, N. E., Kulkova, L. I., Piskunov, N. E., & Svyatoslavskij, N. L., “The second generation “Surface distribution of chromium on the CP2 star HD 220825 (κ Psc)”, automated system for spectrum processing in the Astronomical council of the 1996AstL...22..822R ADS Academy of sciences of USSR”, 1991NInfo..70...56K ADS Valenti, J. A. & Piskunov, N., “Spectroscopy made easy: A new tool for fitting Hackman, T., Piskunov, N. E., Poutanen, M., Strassmeier, K. G., & observations with synthetic spectra.”, 1996A&AS..118..595V ADS Tuominen, I.: 1991, Surface Imaging of Ei-Eridani, Vol. 380, 321 Linsky, J. L., Piskunov, N., & Wood, B. E., “The Three-Dimensional Structure 1991LNP...380..321H ADS of the Local Interstellar Medium”, 1996AAS...188.4407L ADS Piskunov, N. E.: 1991, The Art of Surface Imaging, Vol. 380, 309 1991LNP...380..309P ADS Valenti, J. A., Johns-Krull, C. M., & Piskunov, N., “M-Dwarfs: Molecules and Ableev, V. G., Dshemuchadse, S. V., Dimitrov, C., et al., “Proton and tri- Magnetic Fields”, 1996AAS...188.3206V ADS ton momentum distributions from4He fragmentation at relativistic energies”, Piskunov, N., “Doppler imaging of eclipsing binaries”, 1990FBS.....8..137A ADS 1996IAUS..176...45P ADS Piskunov, N. E. & Wehlau, W. H., “Mapping stellar surfaces from spectra of Piskunov, N. E., “The Structure of VALD”, 1996ASPC..108..307P ADS medium resolution”, 1990A&A...233..497P ADS Valenti, J. A. & Piskunov, N. E., “Spectroscopy Made Easy”, Piskunov, N. E., Tuominen, I., & Vilhu, O., “Surface imaging of late-type 1996ASPC..108..175V ADS stars.”, 1990A&A...230..363P ADS Lester, J. B. & Piskunov, N. E., “Introduction”, 1996ASPC..108..159L Piskunov, N. E., “The surface imaging of the stars.”, 1990MmSAI..61..577P ADS ADS Tuominen, I., Piskunov, N. E., Moss, D., & Brandenburg, A., “Surface Imaging Bennett, P. D., Brown, A., Harper, G. M., Piskunov, N., & Griffin, R. E. M., of Giant Stars and Nonlinear Dynamos”, 1990ASPC....9...73T ADS “The Chromosphere and Wind of zeta Aurigae”, 1995AAS...18710304B Ryabchikova, T. A. & Piskunov, N. E., “Abundance analysis of Hg-Mn star φ ADS Herculis”, 1988mast.conf..124R ADS Piskunov, N. E., Kupka, F., Ryabchikova, T. A., Weiss, W. W., & Jeffery, C. S., Glagolevskij, Y. V., El’Kin, V. G., Romanyuk, I. I., & Piskunov, N. E., “The “VALD: The Vienna Atomic Line Data Base.”, 1995A&AS..112..525P estimation of 53 Cam magnetic field value by means of spectral line width ADS analysis”, 1988mast.conf...32G ADS Hiesberger, F., Piskunov, N., Bonsack, W. K., et al., “The HeI surface distribu- Ryabchikova, T. A. & Piskunov, N. E., “Abundance Analysis of the Mercury- tion of the CP2 star CU Virginis.”, 1995A&A...296..473H ADS Manganese Star Phi Herculis”, 1988eaa..conf...93R ADS Kuschnig, R., Ryabchikova, T., Piskunov, N., Weiss, W. W., & Lecontel, Bochkarev, N. G., Lozinskaya, T. A., Pravdikova, V. V., Sitnik, T. G., & J. M., “The atmosphere of the peculiar binary system ET Andromedae.”, Piskunov, N. N., “Preliminary results of new observations of NGC 6888.”, 1995A&A...294..757K ADS 1988TarOT..89..168B ADS Lukin, V. Y., Mit’kin, K. N., & Piskunov, N. E., “General principles of computer Kuschnig, R., Ryabchikova, T., Piskunov, N. E., & Weiss, W. W., “Ap-star map- image processing”, 1986NInfo..59...99L ADS ping: He, Mg, Si, and Fe surface distributions on the CP2 star CU Virginis”, Lukin, V. Y. & Piskunov, N. E., “Service programmes expanding possibilities of 1995IAUS..176P.135K ADS programming in FORTRAN language in OS ES”, 1986NInfo..59...89L Ryabchikova, T., Kuschnig, R., Piskunov, N. E., & Pavlova, V., “Ap-star map- ADS ping: Fe and Cr abundance distribution on the surface of HD 153882”, Riabchikova, T. A. & Piskunov, N. E.: 1986, Estimation of Stellar Surface Mag- 1995IAUS..176P.132R ADS netic Fields by the Curve-Of Method, Vol. 125, 45 1986ASSL..125...45R Piskunov, N. E. & Rice, J. B., “Progress in surface imaging”, ADS 1995BCrAO..91..176P ADS Grishin, M. P., Kurbanov, S. M., Pakhomov, S. V., Piskunov, N. E., & Piskunov, N. E., Kupka, F., Ryabchikova, T. A., Weiss, W. W., & Jeffery, C. S., Sviatoslavskii, N. L., “An automated astronomical image processor”, “The Vienna Atomic Line Data-Base”, 1995ASPC...81..610P ADS 1985SvAL...11..335G ADS Smirnov, O. M. & Piskunov, N. E., “Providing a Common GUI to Image Pro- Glagolevskij, Y. V., Piskunov, N. E., & Khokhlova, V. L., “Investigation of cessing Tasks under pcIPS”, 1995ASPC...77..133S ADS the AP star alpha2 CVn magnetic field geometry from circular polarization profiles of metallic lines.”, 1985PAZh...11..371G ADS Piskunov, N., Ryabchikova, T. A., Kuschnig, R., & Weiss, W. W., “Spec- Glagolevskii, Y. V., Piskunov, N. E., & Khokhlova, V. 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L., “Automated System for Astronomical Image Processing”, Piskunov, N., “Surface Imaging of Spotted Stars”, 1994cpms.conf...53P 1985PAZh...11..793G ADS Piskunov, N. E. & Khokhlova, V. L., “Linear-polarization line pro- ADS files as an indicator of the magnetic field geometry of AP stars”, Piskunov, N. E. & Rice, J. B., “Progress in surface imaging.”, 1984PAZh...10..449P ADS 1994IzKry..91..208P ADS Piskunov, N. E. & Khokhlova, V. L., “Linear Polarization Line Pro- Saar, S. H., Piskunov, N. E., & Tuominen, I., “Multiepoch Magnetic Surface files as an Indicator of the Magnetic Field Geometry of Ap-Stars”, Images of LQ Hya”, 1994ASPC...64..661S ADS 1984SvAL...10..187P ADS Piskunov, N. E., Huenemoerder, D., & Saar, S. H., “Simultaneous SPOT and Ryabchikova, T. A. & Piskunov, N. E., “Estimate of stellar surface magnetic Chromosphere Maps of FK Comae”, 1994ASPC...64..658P ADS fields by the curve-of-growth method.”, 1984mast.conf...27R ADS Smirnov, O. M. & Piskunov, N. 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