E. Franz, K. Liesebach, и K. Borcea-Pfitzmann. Proceedings of the international workshop in conjunciton with AVI 2006 on Context in advanced interfaces - AVI '06, стр. 45-48. New York, USA, ACM Press, (2006)
W. Edwards. Proceedings of the 1996 ACM conference on Computer supported cooperative work - CSCW '96, стр. 11-20. New York, USA, ACM Press, (ноября 1996)
M. Nyanchama, и S. Osborn. Proceedings of the IFIP WG11.3 Working Conference on Database Security VII, стр. 37--56. Amsterdam, The Netherlands, The Netherlands, North-Holland Publishing Co., (1994)
H. Zhu. Proceedings of Canadian Conference on Electrical and Computer Engineering 2003 (IEEE CCECE 2003), 2, стр. 687-690. Montreal, Canada, IEEE Computer Society, (мая 2003)