DE ZULUETA, J. Commonwealth Bureau of Pastures and Field Crops (CAB), 1978: Measurements of grassland vegetation and animal production. Boletín 52,260 p. (Edición dirigida por L’.tMannerje.) Farnham Royal, Bucks, England. ISBN 0-85198-404-5. Pastos, [S. l.], v. 10, n. 1, p. 187–189, 2011. Disponível em: https://polired.upm.es/index.php/pastos/article/view/706. Acesso em: 16 may. 2026.