Schwab, Natalia Teixeira, et al. “Applicability of the Term Anthochron for Representing the Speed Rate of Flower Opening on the Inflorescence”. Pesquisa Agropecuaria Brasileira, vol. 49, no. 9, Oct. 2014, pp. 657-64, doi:10.1590/S1678-3921.pab2014.v49.19172.