Vieira, Nóris Regina de Almeida, et al. “Germination of Rice Seed As Related Tostage of Maturity”. Pesquisa Agropecuaria Brasileira, vol. 17, no. 10, Apr. 2014, pp. 1471-5, doi:10.1590/S1678-3921.pab1982.v17.16325.