Croce, G., and Bolognani, L. 1975. Lipid components in the skin secretions of amphibia. I. Cholesterol. Comp. Biochem. Physiol. B. 52:307-309. |
|
Cei, J.M., Erspamer, V., and Roseghini, M. 1968. Taxonomic and evolutionary significance of biogenic amines and polypeptides in amphibian skin. II. Toads of the genera Bufo and Melanophryniscus. Syst. Zool. 17:232-245. |
|