P. Victor, C. Cornelis, A. Teredesai, и M. De Cock. SAC '08: Proceedings of the 2008 ACM symposium on Applied computing, стр. 2014--2018. New York, NY, USA, ACM, (2008)
Y. Huang, N. Contractor, и Y. Yao. dg.o '08: Proceedings of the 2008 international conference on Digital government research, стр. 27--33. Digital Government Society of North America, (2008)
H. Ma, I. King, и M. Lyu. Proceedings of the 32nd international ACM SIGIR conference on Research and development in information retrieval, стр. 203--210. New York, NY, USA, ACM, (2009)