OSORIO LA, 2011, COMUNICAR, V19, P65, DOI 10.3916/C37-2011-02-06;AGUDO-PEREGRINA AF, 2014, COMPUT HUM BEHAV, V31, P542, DOI 10.1016/J.CHB.2013.05.031;ANONYMOUS, 2013, OP ED RES BREAK LOCK;BAKI A, 2010, COMPUT EDUC, V55, P1459, DOI 10.1016/J.COMPEDU.2010.06.009;BARANIUK R.G., 2008, OPENING ED COLLECTIV, P229;BARRA E., 2014, INT J SOC BEHAV ED E, V8, P741;CHITWOOD K., 2005, 20 ANN C DIST TEACH, P1;CLEMENTS KI, 2012, J COMPUT ASSIST LEAR, V28, P4, DOI 10.1111/J.1365-2729.2011.00450.X;CLEMENTS K, 2015, COMPUT HUM BEHAV, V51, P1098, DOI 10.1016/J.CHB.2015.03.026;CLOW D., 2012, P LAK 12, P134, DOI 10.1145/2330601.2330636;DOWNES S., 2007, INTERDISCIPLINARY J, V3, P29, DOI DOI 10.28945/384;DYCKHOFF AL, 2012, EDUC TECHNOL SOC, V15, P58;GOMEZ-ZERMENO M, 2012, COMUNICAR, V20, P119, DOI 10.3916/C39-2012-03-02;GORDILLO A, 2014, P 44 FRONT ED C FIE, P3088;HANLEY G., 2005, P ADV EFF SUST OP ED;HUNG JL, 2012, EDUC TECHNOL SOC, V15, P27;HYLEN J., 2006, P OP ED, V51, P49;KAY ROBIN, 2009, INTERDISCIPLINARY JOURNAL OF E-LEARNING AND LEARNING OBJECTS, V5, P27;KAY R, 2014, INTERACT LEARN ENVIR, V22, P67, DOI 10.1080/10494820.2011.641675;KRAUSS FERDINAND, 2005, INTERDISCIPLINARY JOURNAL OF KNOWLEDGE AND LEARNING OBJECTS, V1, P1;LARSEN K., 2006, ADV KNOWLEDGE KNOWLE, P151;LEACOCK TL, 2007, EDUC TECHNOL SOC, V10, P44;LONG PHIL, 2011, EDUCAUSE REVIEW, V46, P31;MACFADYEN LP, 2010, COMPUT EDUC, V54, P588, DOI 10.1016/J.COMPEDU.2009.09.008;MARCUS-QUINN A, 2015, EDUC XX1, V18, P325, DOI 10.5944/EDUCXX1.18.1.12335;MCDONALD J, 2006, WHO'S LEARNING? WHOSE TECHNOLOGY?, PROCEEDINGS, VOLS 1 AND 2, P535;MCGREAL R., 2004, INT J INSTRUCTIONAL, V1, P21;MILLER L. DEE, 2013, 2013 IEEE FRONTIERS IN EDUCATION CONFERENCE (FIE), P203, DOI 10.1109/FIE.2013.6684817;MINAEI-BIDGOLI B., 2003, FRONT ED 33 ANN C SE;MOORE MG, 1989, AM J DISTANCE ED, V3, P1, DOI 10.1080/08923648909526659, DOI 10.1080/08923648909526659;MUNOZ P., 2014, 16 INT C TRANSP OPT, P1, DOI DOI 10.1109/CISTI.2014.6877096;OCHOA X., 2006, P 1 INT WORKSH CONT P 1 INT WORKSH CONT, P9;PALAZON A., 2001, COMUNICAR REV CIENTI, V17, P93;ROMERO C, 2010, IEEE T SYST MAN CY C, V40, P601, DOI 10.1109/TSMCC.2010.2053532;SCHIBECI R, 2008, COMPUT EDUC, V50, P271, DOI 10.1016/J.COMPEDU.2006.05.006;SIEMENS G, 2012, EDUC TECHNOL SOC, V15, P1;SU JM, 2006, EDUC TECHNOL SOC, V9, P262;TZIKOPOULOS A, 2007, LEARNING OBJECTS INS, P29, DOI DOI 10.4018/978-1-59904-334-0.CH003;VAN LEEUWEN A, 2014, COMPUT EDUC, V79, P28, DOI 10.1016/J.COMPEDU.2014.07.007;VARGO J., 2003, INT J COMPUT APPL, V25, P198;WILEY D.A., 2000, INSTRUCTIONAL USE LE;WILEY DA, 2000, LEARNING OBJECT DESI;ZERVAS P, 2014, KNOWL MANAG E-LEARN, V6, P156