1. ABRAHAMSSON, S. 1973. The crayfish Astacus astacus in Sweden and the introduction of the American crayfish Pacifastacus laniusculus. Int. Symp. Freshwater Crayfish 1, 27–40.
2. ABRAHAMSSON, S., and GOLDMAN, C. R. 1970. Distribution, density, and production of the crayfish Pacifastacus leniusculus Dana in Lake Tahoe, California- Nevada. Oikos
21, 83–91.
3. AIKEN, D. E. 1969. Ovarian maturation and egg laying in the crayfish Orconectes virilis: Influence of temperature and photoperiod. Can. J. Zool. 47, 931–935.
4. AIKEN, D. E. 1968. Further extension of the known range of the crayfish Orconectes virilis (Hagen). Natural Museum Can. Bull. 223, 43–48.
5. AIKEN, D. E. 1980. Molting and growth. The Biology and Management of Lobsters, Vol. 1, J. S. Cobb and B. F. Phillips (editors), Academic Press, New York.