de Souza, Adilson Pacheco, Sarita Leonel, and Andréa Carvalho da Silva. 2012. “Basal Temperature and Thermal Sum in Phenological Phases of Nectarine and Peach Cultivars”. Pesquisa Agropecuaria Brasileira 46 (12):1588-96. https://doi.org/10.1590/S1678-3921.pab2011.v46.11279.