Valladares-Pádua, C.; Mittermeier, R. A.; Fonseca, G. A. B.; Lacy, R. C.; Byers, O. In Memoriam: José Márcio Ayres and Ulysses S. Seal. Neotrop. Primates 2003, 11 (1), 39-43. https://doi.org/10.62015/np.2003.v11.533.