Amitay, Einat ; Carmel, David ; Hare'l, Nadav ; Ofek-Koifman, Shila ; Soffer, Aya ; Yogev, Sivan ; Golbandi, Nadav: Social Search and Discovery Using a Unified Approach. In: HT '09: Proceedings of the Twentieth ACM Conference on Hypertext and Hypermedia. New York, NY, USA : ACM, 2009