Botes et al., 2002. In: Zaid, A. Arias-Jimenez, E. J. . Date palm cultivation. FAO plant production and protection paper, 156 rev.1. FAO, Rome

Botes, A. ; Zaid, A., 2002. The economic importance of date production and international trade. In: Zaid, A. Arias-Jimenez, E. J. . Date palm cultivation. FAO plant production and protection paper, 156 rev.1. FAO, Rome