24Symbols - MODELO DE NEGOCIO
REVISTA DE PRENSA
http://publishingperspectives.com/2011/07/a-cloud-based-subscription-model-for-books/http://www.nybooks.com/blogs/nyrblog/2011/jun/10/reading-icloud/
http://www.newyorker.com/online/blogs/books/2011/04/books-in-the-cloud-or-the-reading-police.html
http://www.guardian.co.uk/commentisfree/2010/oct/14/digital-reading-ebook-kindle-ipad
http://elpais.com/diario/2010/11/14/tendencias/1289689201_850215.html