Nelson, John. The Virtual Property Problem: What Property Rights in Virtual Resources Might Look Like, How They Might Work, and Why They are a Bad Idea (англ.) // McGeorge Law Review : journal. — 2010. — Vol. 41. — P. 281, 285—86.Fairfield, Joshua.Virtual Property (неопр.) // Boston University Law Review. — 2005. — Т. 85. — С. 1047. Архивировано 12 августа 2011 года.
Nelson, John. The Virtual Property Problem: What Property Rights in Virtual Resources Might Look Like, How They Might Work, and Why They are a Bad Idea (англ.) // McGeorge Law Review : journal. — 2010. — Vol. 41. — P. 281, 285—86.Fairfield, Joshua.Virtual Property (неопр.) // Boston University Law Review. — 2005. — Т. 85. — С. 1047. Архивировано 12 августа 2011 года.