Villar, Rafael; Ruiz-Robleto, Jeannete; Ubera, José Luis; Poorter, Hendrik (October 2013). «Exploring variation in leaf mass per area (LMA) from leaf to cell: An anatomical analysis of 26 woody species». American Journal of Botany100 (10): 1969-1980. PMID24107583. doi:10.3732/ajb.1200562.
Villar, Rafael; Ruiz-Robleto, Jeannete; Ubera, José Luis; Poorter, Hendrik (October 2013). «Exploring variation in leaf mass per area (LMA) from leaf to cell: An anatomical analysis of 26 woody species». American Journal of Botany100 (10): 1969-1980. PMID24107583. doi:10.3732/ajb.1200562.