1. Amalitzky, W. P. 1921. Dvinosauridae: North Dvina Excavations of Prof. Amalitzky. Russian Akademii Nauk, Petrograd.
2. Ammon, L. 1889. Die permischen Amphibien der Rheinpfalz. Straub, München.
3. Anderson, J. S. 2007. Incorporating ontogeny into the matrix: a phylogenetic evaluation of developmental evidence for the origins of modern amphibians. In Anderson, J. S. & Sues, H.-D. (eds). Major Transitions in Vertebrate Evolution. Indiana University Press, Bloomington: pp. 182-227.
4. Georgenthalia clavinasica, a new genus and species of dissorophoid temnospondyl from the Early Permian of Germany, and the relationships of the family Amphibamidae;Anderson;Journal of Vertebrate Paleontology,2008
5. A stem batrachian from the Early Permian of Texas and the origin of frogs and salamanders;Anderson;Nature,2008