ACKERMAN M.S., 2002, EXPERTISE SHARING KN;BAKER RYAN SJD, 2009, J ED DATA MINING, V1, P3, DOI DOI 10.1109/ASE.2003.1240314;BARABASI AL, 2003, LECT NOTES PHYS, V625, P46;BERTHOLD M., 2011, 2011 11TH IEEE INTERNATIONAL CONFERENCE ON ADVANCED LEARNING TECHNOLOGIES (ICALT 2011), P615, DOI 10.1109/ICALT.2011.188;BURT RS, 2000, RES ORGAN BEHAV, V22, P345, DOI 10.1016/S0191-3085(00)22009-1;CAO Y., 2010, 4 INT C MULT UB ENG, P1;CHESBROUGH H., 2003, OPEN INNOVATION NEW;DANIEL B, 2002, INTERNATIONAL CONFERENCE ON COMPUTERS IN EDUCATION, VOLS I AND II, PROCEEDINGS, P574, DOI 10.1109/CIE.2002.1186008;DELONE WH, 1992, INFORM SYST RES, V3, P60, DOI 10.1287/ISRE.3.1.60;DRACHSLER H, 2008, INT J LEARN TECHNOL, V3, P404, DOI 10.1504/IJLT.2008.019376;FRUHMANN K., 2010, 3 INT C ELEARNING BA;JANSEN B.J., 2009, SYNTHESIS LECT INFOR, V1, P1;JOHNSON LARRY, 2013, NMC HORIZON REPORT 2;KAUSHIK A., 2010, WEB ANAL 2 0 ART ONL;KEIM D, 2008, LECT NOTES COMPUT SC, V4950, P154, DOI 10.1007/978-3-540-70956-5;KLAMMA R, 2006, LECT NOTES COMPUT SC, V4227, P242;KLAMMA R, 2006, LECT NOTES COMPUT SC, V4227, P227;KLEINBERG JM, 1999, J ACM, V46, P604, DOI 10.1145/324133.324140;KOVACHEV D., 2011, LNCS, V7048, P51, DOI DOI 10.1007/978-3-642-25813-8_6;KRENGE J., 2011, 2011 11TH IEEE INTERNATIONAL CONFERENCE ON ADVANCED LEARNING TECHNOLOGIES (ICALT 2011), P307, DOI 10.1109/ICALT.2011.95;LESKOVEC J, 2012, ARXIV12056228;LIN CY, 2008, IEEE MULTIMEDIA, V15, P78, DOI 10.1109/MMUL.2008.17;NEWMAN M.E., 2004, PHYS REV E, V69, DOI 10.1103/PHYSREVE.69.026113;NUSSBAUMER ALEXANDER, 2012, ADVANCES IN WEB-BASED LEARNING - ICWL 2012. PROCEEDINGS OF THE 11TH INTERNATIONAL CONFERENCE, P79, DOI 10.1007/978-3-642-33642-3_9;PETRUSHYNA Z, 2008, LECT NOTES COMPUT SC, V5192, P354;PORTER M., 1998, CLUSTERS COMPETITION;RASHID K, 2012, MOD SIMUL ENG, V2012, DOI 10.1155/2012/516807;REICHLING TIM, 2007, COMPUTER SUPPORTED COOPERATIVE WORK: THE JOURNAL OF COLLABORATIVE COMPUTING, V16, P431, DOI 10.1007/S10606-007-9055-2;RENZEL DOMINIK, 2008, 2008 NINTH INTERNATIONAL WORKSHOP ON IMAGE ANALYSIS FOR MULTIMEDIA INTERACTIVE SERVICES (WIAMIS), P139, DOI 10.1109/WIAMIS.2008.52;RENZEL D., 2013, P 3 INT C LEARN AN K, P250, DOI DOI 10.1145/2460296.2460347;RENZEL D, 2009, 2009 IEEE THIRD INTERNATIONAL CONFERENCE ON SEMANTIC COMPUTING (ICSC 2009), P630, DOI 10.1109/ICSC.2009.112;RIZOVA P, 2006, MIT SLOAN MANAGE REV, V47, P49;SAINT-ANDRE P., 2004, 3920 RFC;SCHEFFEL M, 2011, LECT NOTES COMPUT SC, V6964, P341, DOI 10.1007/978-3-642-23985-4_27;SHUM SB, 2012, EDUC TECHNOL SOC, V15, P3;SONG EG, 2011, LECT NOTES COMPUT SC, V6964, P398, DOI 10.1007/978-3-642-23985-4_31;VAN HARMELEN M., 2006, ICALT, V6, P815, DOI DOI 10.1109/ICALT.2006.263;WENGER E., 1998, COMMUNITY PRACTICE L;WORSLEY M., 2011, P 4 INT C ED DAT MIN, P235;ZIMMERMAN BJ, 2002, THEOR PRACT, V41, P64, DOI 10.1207/S15430421TIP4102_2