M. Beckman, Collaborative Learning, College Teaching, vol.17, issue.3, pp.128-133, 1990.
DOI : 10.1016/S0361-476X(87)80038-3

C. N. Kinshuk and W. , H: Cyber Schooling Framework: Improving Mobility and Situated Learning, International Journal of Engineering Education, vol.23, issue.3, pp.423-431, 2005.

M. ?uku?i?, N. Alfirevi?, A. Grani?, and ?. Gara?a, e-Learning process management and the e-learning performance: Results of a European empirical study, Computers & Education, vol.55, issue.2, pp.554-565, 2010.
DOI : 10.1016/j.compedu.2010.02.017

T. H. Davenport and L. Prusak, Working Knowledge?How Organizations Manage What They Know, 1998.

D. Dubis and H. Prade, Operations on fuzzy numbers, International Journal of Systems Science, vol.12, issue.6, pp.613-626, 1978.
DOI : 10.1016/S0019-9958(65)90241-X

P. Forcheri, M. Molfino, and A. Quarati, ICT Driven Individual Learning: New Opportunities and Perspectives, Educational Technology & Society, vol.3, issue.1, pp.51-61, 2000.

A. Grani? and M. ?uku?i?, Usability Testing and Expert Inspections Complemented by Educational Evaluation: A Case Study of an e-Learning Platform, Educational Technology & Society, vol.14, issue.2, pp.107-123, 2011.

P. H. Gray and Y. E. Chan, Integrating Knowledge Management Practices Through a Problem Solving Framework, Communications of the AIS, vol.4, issue.12, p.12, 2000.

E. S. Lee and R. L. Li, Comparison of fuzzy numbers based on the probability measure of fuzzy events, Computers & Mathematics with Applications, vol.15, issue.10, pp.887-896, 1988.
DOI : 10.1016/0898-1221(88)90124-1

D. R. Liu, I. C. Wu, and K. S. Yang, Task-based -Support system: disseminating and sharing task-relevant knowledge, Expert Systems with Applications, vol.29, issue.2, pp.408-423, 2005.
DOI : 10.1016/j.eswa.2005.04.036

C. Norris, E. Soloway, and T. Sullivan, Log on Education: Examining 25 Years of Technology in U, S. Education. Communications of the ACM, vol.45, issue.8, pp.15-18, 2002.

F. Patterson and S. Hobley, A New Way To Evaluate Learning and Training?, KM Review, vol.6, issue.3, pp.20-23, 2003.

S. K. Riffell and D. F. Sibley, Student Perceptions of a Hybrid Learning Format: Can Online Exercises Replace Traditional Lectures, Journal of College Science Teaching, vol.32, pp.394-399, 2003.

T. L. Saaty, A scaling method for priorities in hierarchical structures, Journal of Mathematical Psychology, vol.15, issue.3, pp.234-281, 1977.
DOI : 10.1016/0022-2496(77)90033-5

Y. Sato, Questionnaire Design for Survey Research: Employing Weighting Method, VII International Symposium on the Analytic Hierarchy Process, 2005.

L. A. Zadeh, The concept of a linguistic variable and its application to approximate reasoning???I, Information Sciences, vol.8, issue.3, pp.199-249, 1975.
DOI : 10.1016/0020-0255(75)90036-5