1. Applications of Center Manifold Theory;Carr,1981
2. Methods of Bifurcation Theory;Chow,1982
3. Normal Forms and Bifurcation of Planar Vector Fields;Chow,1994
4. Linkage and selection: two locus symmetric viability model;Feldman;Theor. Popul. Biol.,1970
5. The Genetical Theory of Natural Selection;Fisher,1930