1. Biotelemetric studies of temperature regulation and torpor in the echidna, Tachyglossus aculeatus;Augee;J. Mammal.,1970
2. Reproduction by echidnas in a cold climate;Beard,1992
3. Reproduction in the short-beaked echidna, Tachyglossus aculeatus: field observations at an elevated site in South-East Queensland;Beard;Proc. Linn. Soc. NSW,2000
4. Beard, L.A., Grigg, G.C., 2001. Radiotelemetry of echidnas and platypus. In: Eiler, J.H., Alcorn, D.J., Neuman, M.R. (Eds.), Proceedings of 15th International Symposium on Biotelemetry. Juneau, Alaska, USA. International Society on Biotelemetry, Wageningen, The Netherlands, pp. 493–500
5. Primitive mammals;Dawson,1973