Just, Peter (2007), Electronic Books in the USA - their numbers and development and a comparison to Germany. Library Hi Tech 25(1), pp. 157-164. (déposé sur E-LIS)

"This article will provide data to specify the problem of low e-book-supply. First the total number of commercially available English-speaking e-books in the US-market is stated. Then the growth of the title supply over the last twenty years is reviewed. Third the growth of the publishing-activities in the e-book-market is set in relation to the developments in the hardcover-market. Finally these numbers of the English-speaking market are compared to the numbers for the German-speaking market."