1. Bridges CB, Morgan TH (1919) The second chromosome group of mutant characters, Carnegie Institute of Washington Publication #278, Part II: pp. 123–304
2. Bridges CB, Morgan TH (1923) The third chromosome group of characters in Drosophila melanogaster, Carnegie Institute of Washingtion Publication #327
3. Fisher RA (1931) The genetical theory of natural selection. The Clarendon Press, Oxford
4. Grant PR (1986) Ecology and evolution of Darwin’s finches. Princeton University Press, Princeton
5. Kleene SC (1956) On the representation of events in nerve nets and finite automata. In: Shannon C, Weaver P (eds) Automata studies. Princeton University, Princeton