de Araújo, C.N.L. et al. (1994) “Caracterization of seed oil from 12 genotypes of sunflower (Helianthus annuus, L.) obtained under the climatic conditions of the state of Ceará”, Pesquisa Agropecuaria Brasileira, 29(6), pp. 901–906. doi:10.1590/S1678-3921.pab1994.v29.4131.