VALLADARES-PÁDUA, Cláudio; MITTERMEIER, Russell A.; FONSECA, Gustavo A. B.; LACY, Robert C.; BYERS, Onnie. In memoriam: José Márcio Ayres and Ulysses S. Seal. Neotropical Primates, Arlington, VA, USA, v. 11, n. 1, p. 39–43, 2003. DOI: 10.62015/np.2003.v11.533. Disponível em: https://primate.socgen.ucla.edu/index.php/multivitaminic/article/view/533.. Acesso em: 6 feb. 2025.