1. Beesley, K., Karttunen, L.: Finite-State Morphology. CSLI Publications, Stanford, California (2003)
2. Corbí-Bellot, A.M., Forcada, M.L., Ortiz-Rojas, S., Pérez-Ortiz, J.A., Ramírez-Sánchez, G., Sánchez-Martinez, F., Alegria, I., Mayor, A., Sarasola, K.: An open-source shallow-transfer MT engine for the Romance languages of Spain. In: EAMT 10th Annual Conference (EAMT 2005), Budapest, Hungary, May 30-31 (2005)