Rita M. Hauck, "Stratospheric Transparency: Perspectives on Internet Privacy, Forum on Public Policy (Summer 2009) 存档副本(PDF). [2021-05-28]. (原始内容(PDF)存档于2013-04-20).
Rita M. Hauck, "Stratospheric Transparency: Perspectives on Internet Privacy, Forum on Public Policy (Summer 2009) 存档副本(PDF). [2021-05-28]. (原始内容(PDF)存档于2013-04-20).