Ivelina Nikolova, Darina Dicheva, Gennady Agre, Zhivko Angelov, Galia Angelova, Christo Dichev, Darin Madzharov. Exploring the Use of Resources in the Educational Site Ucha.SE. In Christo Dichev, Gennady Agre, editors, Artificial Intelligence: Methodology, Systems, and Applications - 17th International Conference, AIMSA 2016, Varna, Bulgaria, September 7-10, 2016, Proceedings. Volume 9883 of Lecture Notes in Computer Science, pages 347-351, Springer, 2016. [doi]