Lopes, Leandro Cesar, et al. “Embryo Culture and in Vitro Induction of Shoots for Micropropagation of Physic Nut”. Pesquisa Agropecuaria Brasileira, vol. 47, no. 7, Aug. 2012, pp. 902-7, doi:10.1590/S1678-3921.pab2012.v47.12425.