Inproceedings (1367620)
Leskovec, J. & Horvitz, E.
Planetary-scale views on a large instant-messaging network
ACM, 2008, 915-924

Article (crestani1997spreading)
Crestani, F.
Application of Spreading Activation Techniques in Information Retrieval
Artificial Intelligence Review, 1997, 11, 453-482

Inproceedings (salton1988spreading)
Salton, G. & Buckley, C.
On the use of spreading activation methods in automatic information
ACM Press, 1988, 147-160