Roca-Fernández, A. I., González-Rodríguez, A., & Vázquez-Yáñez, O. P. (2012). Effect of pasture allowance and cows’ lactation stage on perennial ryegrass sward quality, pasture dry matter intake and milk performance of Holstein-Friesian cows. Spanish Journal of Agricultural Research, 10(2), 393-408. https://doi.org/10.5424/sjar/2012102-123-11