AYARI, A.; ZUBIZARRETA-GERENDIAIN, A.; TOME, M.; TOME, J.; GARCHI, S.; HENCHI, B. Stand, tree and crown variables affecting cone crop and seed yield of Aleppo pine forests in different bioclimatic regions of Tunisia. Forest Systems, v. 21, n. 1, p. 128-140, 28 Mar. 2012.