Abbott A, Cyranoski D, Jones N, et al. Metrics: Do metrics matter? Nature 2010;465(7300):860–862. DOI: 10.1038/465860a.
Björk B, Roos A, Lauri M. Scientific journal publishing: Yearly volume and open access availability. Information Research 2009. Available from: http://www.informationr.net/ir/14-1/paper391.html.
Bauerlein M, Gad-el-Hak M, Grody W, et al. We must stop the avalanche of low-quality research. The Chronicle of Higher Education. 2010. Available from: http://www.chronicle.com/article/We-Must-Stop-the-Avalanche-of/65890.
Reuters T. Journal self-citation in the journal citation reports. 2011. Available from: http://www.thomsonreuters.com/products_services/science/free/essays/journal_self_citation_jcr.