url(r'^book/(?P<slug>[^/]+)/epub$', 'book_epub', name="catalogue_book_epub"),
url(r'^book/(?P<slug>[^/]+)/mobi$', 'book_mobi', name="catalogue_book_mobi"),
url(r'^book/(?P<slug>[^/]+)/pdf$', 'book_pdf', name="catalogue_book_pdf"),
+ url(r'^book/(?P<slug>[^/]+)/pdf-mobile$', 'book_pdf', kwargs={'mobile': True}, name="catalogue_book_pdf_mobile"),
url(r'^chunk_add/(?P<slug>[^/]+)/(?P<chunk>[^/]+)/$',
'chunk_add', name="catalogue_chunk_add"),