1. Computation and interpretation of biological statistics of fish populations;Ricker;Bulletin of the Fisheries Research Board of Canada,1975
2. Brand A.R. & Allison E.H. , 1994. Estimating abundance on north Irish Sea scallop (Pecten maximus (L.)) fishing grounds. Canadian Technical Report of Fisheries and Aquatic Sciences, in press.
3. Distribution and growth of the queen Chlamys opercularis (Lamellibranchiata) in Danish and Faroese waters;Ursin;Meddelserfra Danmarks Fiskeri-og Havundersogelser,1956