Simões MOM, Silva EAM, Teixeira SL. Ontogeny of adventitious shoots of Citrus sinensis (Linn.) Osbeck cv. pêra cultivated in vitro according to the type of explant used. PAB. 1991;26(6):797-805. doi:10.1590/S1678-3921.pab1991.v26.3407