1. Arrighi, F.E., 1974, Mammalian chromosomes, in “The Cell Nucleus” (H. Busch, ed.), Vol.2 pp. 1–32. Academ. Press, New York and London.
2. Ayala, F.J., 1975, Genetic differentiation during the speciation process. Evol. Biol. 8: 1–78.
3. Bachmann, K., Goin, O.B., and Goin, C.J., 1972, Nuclear DNA amounts in vertebrates. Brookhaven Symp. Biol. 23: 419–447.
4. Bachmann, K., Harrington, B.A. and Craig, J.P., 1972, Genome size in birds. Chromosoma (Berl.) 37: 405–416.
5. Baker, R.J., Mengden, G.A. and Bull, J.J., 1972, Karyotypic studies on thirty-eight species of North-American Snakes. Copeia 1972: 257–265.