Experimental evidence for the evolutionary significance of temperature-dependent sex determination. Brodie, E. D., III, and F. J. Janzen. Brodie, E. D., III, A. J. Moore, and F. J. Janzen. Visualizing and quantifying natural selection. Janzen, F. J. 1994.
Vegetational cover predicts the sex ratio of hatchling turtles in natural nests.
Janzen, F. J. 1994. Climate change and temperature-dependent sex determination in reptiles. Janzen, F. J. 1993. An experimental analysis of natural selection on body size of hatchling turtles. Janzen, F. J. 1993.