1. Genetisch bedingte XX - und XY - ♀ ♀ und YY - ♂ ♂ beim wilden Platypoecilus maculatus aus Mexico;Anders;Z. Vererbungslehre,1963
2. Environmental stimuli altering the physiological condition of the individual among lower vertebrates;Aronson,1965
3. Bionomic studies on certain teleosts (Poeciliinae) I. Statement of problems, descriptive material, and general notes on life histories and breeding behavior under laboratory conditions;Bellamy;Genetics,1924
4. Ecological and social factors influencing the polymorphic pigmentation systems of Xiphophorus v. variatus (Pisces; Poeciliidae);Borowsky,1969
5. Relative size and development of fin coloration in Xiphophorus variatus;Borowsky;Physiol. Zool,1973