Juan C. Granda Pelayo Nuño Daniel F. García Francisco J. Suárez Towards Resilient Synchronous e-Training Platforms. 251-256 2011 NCA https://doi.org/10.1109/NCA.2011.42 https://doi.ieeecomputersociety.org/10.1109/NCA.2011.42 conf/nca/2011 db/conf/nca/nca2011.html#GrandaNGS11