Atzmueller, Martin, Benz, Dominik, Doerfel, Stephan, Hotho, Andreas, Jäschke, Robert, Macek, Bjoern Elmar, Mitzlaff, Folke, Scholz, Christoph and Stumme, Gerd. "Enhancing Social Interactions at Conferences." Information Technology 53 , no. 3 (2011): 101--107.

Balby Marinho, Leandro, Nanopoulos, Alexandros, Schmidt-Thieme, Lars, Jäschke, Robert, Hotho, Andreas, Stumme, Gerd and Symeonidis, Panagiotis. "Social Tagging Recommender Systems." In Recommender Systems Handbook , edited by Francesco Ricci, Lior Rokach, Bracha Shapira and Paul B. Kantor , 615--644. New York: Springer, 2011.

Burke, Robin, Gemmell, Jonathan, Hotho, Andreas and Jäschke, Robert. "Recommendation in the Social Web." AI Magazine 32 , no. 3 (2011): 46--56.

Illig, Jens, Hotho, Andreas, Jäschke, Robert and Stumme, Gerd. "A Comparison of Content-Based Tag Recommendations in Folksonomy Systems." Paper presented at the meeting of the Knowledge Processing and Data Analysis, Berlin/Heidelberg, 2011.

Jäschke, Robert. Formal Concept Analysis and Tag Recommendations in Collaborative Tagging Systems. Vol. 332. Heidelberg, Germany: Akademische Verlagsgesellschaft AKA, 2011.

Navarro Bullock, Beate, Jäschke, Robert and Hotho, Andreas. "Tagging data as implicit feedback for learning-to-rank." Paper presented at the meeting of the Proceedings of the ACM WebSci Conference, New York, NY, USA, 2011.

Formal Concept Analysis. Valtchev, Petko and Jäschke, Robert, eds. , Springer , Berlin/Heidelberg (2011). .