1. Allard, R.W.: Genetic systems associated with colonizing ability in predominantly self-pollinated species. In: The Genetics of colonizing species (eds. Baker, H.G.; Stebbins, G.L.), pp. 49–75. New York, London: Acad. Press 1965
2. Allard, R.W.: The mating system and microevolution. Genetics 79, 115–126 (1975)
3. Allard, R.W.; Babbel, G.R.; Clegg, M.T.; Kahler, A.L.: Evidence for coadaptation in Avena barbata. Proc. Nat. Acad. Sci. (Wash.) 69, 3043–3048 (1972)
4. Allard, R.W.; Jain, S.K.; Workman, P.L.: The genetics of inbreeding populations. Adv. Genet. 14, 55–131 (1968)
5. Allard, R.W.; Miller, R.D.; Kahler, A.L.: The relationship between degree of environmental heterogeneity and genetic polymorphism. In: Structure and functioning of plant populations (eds. Freysen, A.H.J.; Woldendorp, J.W.), pp. 49–73. New York: North-Holland Publ. 1978