1. Statistical Analysis;Afifi,1979
2. Investigations of fish, zooplankton and benthos in Lake Årungen;Borgstrøm,1984
3. Design of a sonar for fish counting;Craig;Fiskeridiv. Skr. Ser. Havunders.,1969
4. An echo counting and logging system (ECOLOG) for demersal fish size distributions and densities;Dickie;Can. J. Fish. Aquat. Sci.,1983
5. Analysis of some errors associated with the use of target strength-to-length regressions in estimating fish abundance;Foote,1981