BioStor
 | Pipid frogs from the Early Cretaceous of Israel and pipid evolution E Nevo (1968) Bulletin of The Museum of Comparative Zoology 136: 255-318 |
 | On the classification of frogs William E Duellman (1975) Occasional Papers of the Museum of Natural History, The University of Kansas 42: 1-14 |
 | A re-assessment of the telmatobiine leptodactylid frogs of Patagónia John D Lynch (1978) Occasional Papers of the Museum of Natural History, The University of Kansas 72: 1-57 |