Gomes, Luiz H., Almeida, Rodrigo B., Bettencourt, Luis M. A., Almeida, Virgilio, Almeida, Jussara M., Rezension zu: Comparative Graph Theoretical Characterization of Networks of Spam and Legitimate Email (2005).

Almeida, Rodrigo B., Almeida, Virgilio A. F.: A community-aware search engine. In: Proceedings of the 13th international conference on World Wide Web. New York, NY, USA : ACM Press, 2004. - ISBN 1-58113-844-X, S. 413--421