I. Santiago, J. Vara, V. de Castro, and E. Marcos. ENASE (Selected Papers), volume 417 of Communications in Computer and Information Science, page 229-240. Springer, (2013)
I. Santiago, J. Vara, V. de Castro, and E. Marcos. ENASE (Selected Papers), volume 551 of Communications in Computer and Information Science, page 1-17. Springer, (2014)