Simões, M.O.M., Silva, E.A.M. and Teixeira, S.L. (1991) “Ontogeny of adventitious shoots of Citrus sinensis (Linn.) Osbeck cv. pêra cultivated in vitro according to the type of explant used”, Pesquisa Agropecuaria Brasileira, 26(6), pp. 797–805. doi:10.1590/S1678-3921.pab1991.v26.3407.