(PDF)存档于2022-05-20). The copyright holder of this document allows anyone to use it for any purpose, provided that the copyright holder is properly attributed
(原始内容存档于2013-10-14) (德语). See e.g. for Russia: Elst, M.: Copyright, Freedom of Speech, and Cultural Policy in the Russian Federation, p. 432f; Martinus
(页面存档备份,存于互联网档案馆) 國際中心/綜合報導 ETtoday新聞雲 2013年11月1日 Russia's Largest Social Network VKontakte Held Liable For Copyright Infringement. Intellectual Property Watch