R. Cárdenas, M. Chávez, J. Luis González, P. Aley, J. Espinoza, and L. Felipe Jiménez García, “Oocyte structure and ultrastructure in the Mexican silverside fish Chirostoma humboldtianum (Atheriniformes: Atherinopsidae)”, Rev. Biol. Trop., vol. 56, no. 4, pp. 1825–1835, Dec. 2008.