1. Th. Dobzhansky, Fecundity inDrosophila pseudoobscura at different temperatures. Journ. of exper. Zool. 1935,71, 449–464.
2. , The Y-chromosome ofDrosophila pseudoobscura. Genetics 1935,20, 377–391.
3. , Genetics and the origin of species. Columbia Univ. Press, New York, 1937, 1–364.
4. undR. D. Boche, Intersterile races ofDrosophila pseudoobscura. Frol. Biol. Zbl. 1933,53, 314–330.
5. G. Gottschewski, Quantitative und qualitative Unterschiede innerhalb einer Allelenreihe beiDrosophila melanogaster. Verh. d. Dt. Zool. Ges. 1936, 104–112.