J. A. Garita, I. Alpízar, and M. Chacón-rivas, OpenACS/dotLRN integration with ITCR platform, 8th OpenACS/dotLRN Conference, pp.27-35, 2009.

C. Garita and M. Chacón-rivas, TEC Digital: A case study of an e-learning environment for higher education in Costa Rica, 2012 International Conference on Information Technology Based Higher Education and Training (ITHET), pp.1-6
DOI : 10.1109/ITHET.2012.6246061

S. Ozkan and R. Koseler, Multi-dimensional evaluation of E-learning systems in the higher education context: An empirical investigation of a computer literacy course, 2009 39th IEEE Frontiers in Education Conference, pp.1-6
DOI : 10.1109/FIE.2009.5350590

M. Aberdour, Open Source Learning Management Systems, EPIC, 2007.

P. Moreno and V. Cerverón, Plataforma tecnológica para potenciar los procesos de enseñanzaaprendizaje: desarrollo en la Universitat de València basado en software libre y colaborativo, Proc: SIIE 06. VIII Simposio Internacional de informática aplicada a la enseñanza, 2006.

B. Rossi, B. Russo, and G. Succi, Free/Libre Open Source Adoption in the Public Sector: Current State and Lessons Learnt

S. Fernandes, A. Cerone, L. Barbosa, and P. Papadopoulos, FLOSS in Technology-Enhanced Learning, 2014.
DOI : 10.1007/978-3-642-54338-8_9

M. A. Khan and F. Urrehman, An Extendable Open Source Architecture of e- Learning System

M. A. Jabr and H. K. Omari, e-Learning Management System Using Service Oriented Architecture, Journal of Computer Science, vol.6, issue.3, p.285, 2010.
DOI : 10.3844/jcssp.2010.285.295