1) Working Party on the Information Economy - Digital Broadband Content : Scientific Publishing. OECD, 2005.
2) Ware, Mark; Mabe, Michael. The stm report : An overview of scientific and scholarly journal publishing. International Association of Scientific, Technical and Medical Publishers, 2009. http://www.stm-assoc.org/2009_10_13_MWC_STM_Report.pdf, (accessed 2010-04-01).