Luíz Henrique Gomes, Rodrigo B. Almeida, Luís M. A. Bettencourt, Virgílio A. F. Almeida, Jussara M. Almeida. Comparative Graph Theoretical Characterization of Networks of Spam. In CEAS 2005 - Second Conference on Email and Anti-Spam, July 21-22, 2005, Stanford University, California, USA. 2005. [doi]
Abstract is missing.