Congdon, J.D., Vitt, L.J. and Hadley, N.F. (1978) Parental Investment: Comparative Reproductive Energetics in Bisexual and Unisexual Lizards Genus Cnemidophorus. The American Naturalist, 112, 509-521.
http://dx.doi.org/10.1086/283293

has been cited by the following article: