B.A. Block og J.R. Finnerty (1994). «Endothermy in fishes: a phylogenetic analysis of constraints, predispositions, and selection pressures». Environmental Biology of Fishes. 40 (3): 283–302. ISSN1573-5133. doi:10.1007/BF00002518.
B.A. Block og J.R. Finnerty (1994). «Endothermy in fishes: a phylogenetic analysis of constraints, predispositions, and selection pressures». Environmental Biology of Fishes. 40 (3): 283–302. ISSN1573-5133. doi:10.1007/BF00002518.