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- IEEE Trans. Knowl. Data Eng., 27 (8): 2245-2260 (2015)
- Proceedings of the 24th ACM International on Conference on Information and Knowledge Management, page 1491--1500. New York, NY, USA, ACM, (2015)
- JCDL, page 119-128. ACM, (2015)
- Proceedings of the 26th ACM Conference on Hypertext & Social Media, page 33--38. ACM, (2015)
- TWEB, 8 (3): 17 (2014)
- 23rd International World Wide Web Conference, WWW '14, Seoul, Republic of Korea, April 7-11, 2014, Companion Volume, page 557--558. (2014)
- WEBIST 2014 - Proceedings of the 10th International Conference on Web Information Systems and Technologies, Volume 2, Barcelona, Spain, 3-5 April, 2014, page 270--277. (2014)
- User Modeling, Adaptation, and Personalization - 22nd International Conference, UMAP 2014, Aalborg, Denmark, July 7-11, 2014. Proceedings, page 86--97. (2014)
- 18th International Conference in Knowledge Based and Intelligent Information and Engineering Systems, KES 2014, Gdynia, Poland, 15-17 September 2014, page 551--559. (2014)
- Proceedings of the ISWC 2014 Posters & Demonstrations Track a track within the 13th International Semantic Web Conference, ISWC 2014, Riva del Garda, Italy, October 21, 2014., page 369--372. (2014)
- Proceedings of the ISWC 2014 Posters & Demonstrations Track a track within the 13th International Semantic Web Conference, ISWC 2014, Riva del Garda, Italy, October 21, 2014., page 365--368. (2014)
- IEEE 14th International Conference on Advanced Learning Technologies, ICALT 2014, Athens, Greece, July 7-10, 2014, page 722--723. (2014)
- 25th ACM Conference on Hypertext and Social Media, HT '14, Santiago, Chile, September 1-4, 2014, page 56--65. (2014)
- 25th ACM Conference on Hypertext and Social Media, HT '14, Santiago, Chile, September 1-4, 2014, page 13--23. (2014)
- Future Internet, 6 (4): 688--716 (2014)
- Future Internet, 6 (3): 518--541 (2014)
- Open Learning and Teaching in Educational Communities - 9th European Conference on Technology Enhanced Learning, EC-TEL 2014, Graz, Austria, September 16-19, 2014, Proceedings, page 193--206. (2014)
- ICALT 2013: 13th IEEE International Conference on Advanced Learning Technologies (ICALT), Beijing, China, (July 2013)
- Proc. LA-Web, (2012)
- ICADL, volume 8279 of Lecture Notes in Computer Science, page 11-20. Springer, (2013)
