Contains the keyword 134

Sigurdsen T, Bolt JR. The lissamphibian humerus and elbow joint, and the origins of modern amphibians. Journal of Morphology. 2009;270:1443-53. Abstract
Anderson J. Focal review: The origin(s) of modern amphibians. Evolutionary Biology. 2008;35:231-47. Abstract
Ruta M, Coates M. Bones, molecules and crown-tetrapod origins. In: Donoghue PCJ, Smith MP, editors. Telling the Evolutionary Time: Molecular Clocks and the Fossil Record. London: Taylor & Francis.; 2003. Abstract
Ruta M, Coates MI, Quicke DL. Early tetrapod relationships revisited. Biological Reviews of the Cambridge Philosophical Society. 2003;78:251-345. Abstract
Zardoya R, Meyer A. On the origin of and phylogenetic relationships among living amphibians. Proceedings of the National Academy Sciences, USA. 2001;98:7380-3. Abstract