1. Ahmad, M., D. O. F. Skibinski and J. A. Beardmore: An estimate of the amount of genetic variation in the common mussel, Mytilus edulis. Biochem. Genet. 15, 833?846 (1977)
2. Avala, F. J., D. Hedgecock, G. S. Zumwalt and J. W. Valentine: Genetic variation in Tridacna maxima, an ecological analog of some unsuccessful evolutionary lineages. Evolution, Lawrence, Kansas 27, 177?191 (1973)
3. Beaumont, A. R.: Geographic variation in allele frequencies at three loci in Chlamys opercularis from Norway to the Brittany coast. J. mar. biol. Ass. U.K. 62, 243?261 (1982a)
4. Beaumont, A. R.: Variations in heterozygosity at two loci between year classes of a population of Chlamys opercularis (L.) from a Scottish sea loch. Mar. Biol. Lett. 3, 25?34 (1982b)
5. Beaumont, A. R. and C. M. Beveridge: Resolution of phosphoglucomutase isozymes in Mytilus edulis L. Mar. Biol. Lett. 4, 97?103 (1983)