B. G. Ortega-Corona, D. Garrido-Rodríguez, G. García-Bulnes, N. Esparza-Avalos, and J. Morales-Rosas, “Sexual differences in the brain catecholamine content in four species 01 tropical bats”, Rev. Biol. Trop., vol. 40, no. 1, pp. 83–88, Apr. 1992.