1. Patterns of Mammalian Reproduction;Asdell,1946
2. Comparative reproductive strategies of altricial and precocial eutherian Mammals;Derrickson;Functional Ecology,1992
3. Environmental Factors in Mammalian Reproduction;Gilmore,1981
4. The Biology of Monotremes;Griffiths,1978
5. Metatherian reproduction: Transitional or transcending?;Hayssen;The American Naturalist,1985