Barrio Anta, M.; Sixto Blanco, H.; Cañellas Rey de Viñas, I.; González Antoñanzas, F. Merchantable Volume System for Populus X Euramericana (Dode) Guinier Cv. ‘I-214’ Plantations in Central and Northern Spanish Plateau. For. syst. 2007, 16, 65-75.