Suppl. 1. Largest publisher imprints referenced by the Scopus classification Elsevier Academic Press, Applied Science Publishers, Bailliere Tindall, Butterworth Scientific, Butterworth-Heinemann, Cell Press, Churchill Livingstone, Doyma, Ediciones Doyma, Elsevier et al., Hanley and Belfus Inc, JAI Press, Lancet Publishing Group, Mas- son Editeur, Masson Publishing, Morgan Kaufmann Publishers Inc, Mosby Inc, North-Holland Pub Co, Reed Business, Reed-Else- vier (India) Private Limited, Saunders, Society of Manufacturing Engineers, Urban & Fischer Verlag, W. B. Saunders Co Ltd. Springer Adis International Ltd, Allerton Press Inc, Baltzer Science Publishers B.V., BioMed Central, Birkhaeuser, Current Science Inc, D. Reidel Pub Co, Friedr. Vieweg and Sohn Verlags, Gabler Verlag, Humana Press Inc, Kluwer Academic, Maik Nauka Publishing/ Springer SBM, Nature Kenya, Nature Partner Journals, Nature Publishing Group, Palgrave Macmillan Ltd, Plenum Press, Plenum Publishers, Reidel, Reidel Pub Co, Spektrum Akademischer Verlag GmbH, Springer et al. Taylor & Francis Brunner-Routledge, Carfax Publishers, Carfax Publishing Ltd, Chapman & Hall, Dekker, Frank Cass Publishers, Gordon & Breach, Haworth et al., Heldref Publications, Informa Healthcare, Landes Bioscience, Lawrence Erlbaum Associates, M.E. Sharpe Inc, Maney Publishing, Marcel Dekker Inc, Radcliffe Cardiology, Routledge, Taylor & Francis, Triangle Journals Ltd, Vilnius Gediminas Technical Univ. Wiley Basil Blackwell, Blackwell et al., John Wiley & Sons et al., Munksgaard Denmark, Munksgaard International Publishers, Wiley Blackwell et al., Wiley Subscription Services, Wiley-Liss Inc, Wiley-VCH Verlag, Wilhelm Ernst and Sohn. Wolters Kluwer Kluwer Law International, Lippincott Williams & Wilkins, Medknow Publications, Wolters Kluwer et al..