Ribeiro-Silva, S. et al. 2016. PATTERNS OF CACTACEAE SPECIES DISTRIBUTION IN A PROTECTED AREA IN THE SEMIARID CAATINGA BIOME OF NORTH-EASTERN BRAZIL. Edinburgh Journal of Botany. 73, 2 (Jun. 2016), 157–170. DOI:https://doi.org/10.1017/S0960428616000044.