Planetary-scale views on a large instant-messaging network. WWW '08: Proceeding of the 17th international conference on World Wide Web, 915--924, ACM, New York, NY, USA, 2008. [PUMA: analysis messenger msn network seminar2009 sna social] URL
On the use of spreading activation methods in automatic information. SIGIR '88: Proceedings of the 11th annual international ACM SIGIR conference on Research and development in information retrieval, 147--160, ACM Press, New York, NY, USA, 1988. [PUMA: *** activation evaluation ir msn network semantic spreading] URL
Application of Spreading Activation Techniques in Information Retrieval. Artificial Intelligence Review, (11)6:453--482, Dezember 1997. [PUMA: *** activation information ir msn network retrieval search semantic spreading survey] URL