British publishers have also been exploring the market for electronic versions of books in the hope of enjoying strong sales when e-book stores and reading devices achieve critical mass in the coming years. (theguardian.com)
Special format for representation of electronic versions of books. (e-ink-reader.ru)
While it's true that many publishing houses now offer electronic versions of their books, the author's share of the proceeds is relatively small. (blog.publishedandprofitable.com)