Apertium: a free/open-source platform for rule-based machine translation. - Mikel L. Forcada; Mireia Ginestí-Rosell; Jacob Nordfalk; Jim O'Regan; Sergio Ortiz-Rojas; Juan Antonio Pérez-Ortiz; Felipe Sánchez-Martínez; Gema Ramírez-Sánchez; Francis M. Tyers (Mach. Transl., 2011)