1. Development and the evolution of amphibian metamorphosis;Alberch,1989
2. Lissamphibian origins;Bolt,1991
3. Über einige Vertreter der Eryopoidea (Amphibia: Temnospondyli) aus dem europäischen Rotliegend (? höchstes Karbon-Perm). 1. Sclerocephalus;Boy;Paläontol. Z.,1988
4. Branchiosaurs: larvae, metamorphosis and heterochrony in temnospondyls and seymouriamorphs;Boy,2000
5. The lissamphibian enigma;Carroll,2000