Sanchez-de-Miguel, P., Junquera, P., de la Fuente, M., Jimenez, L., Linares, R., Baeza, P. and Lissarrague, J. R. (2011) “Estimation of vineyard leaf area by linear regression”, Spanish Journal of Agricultural Research, 9(1), pp. 202-212. doi: 10.5424/sjar/20110901-354-10.