Lopes, Antonio Wagner Pereira, et al. “FRUIT MATURATION STAGE AND GA3 IN PAPAYA SEED GERMINATION”. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], vol. 39, no. 4, Oct. 2009, pp. 278-84, https://doi.org/10.5216/pat.v39i4.5763.