1. The fat and small herring on the coast of Norway;Sund;Rapp. P-v. Réun. Cons. perm. int. Explor. Mer-Ann. Biol.,1941
2. Zur quantitativen Auswertung der Echolot-Beobachtungen;von Brandt;Protok. FlschTech.,1950
3. Echo sounding and the pelagic fisheries;Hodgson;Fishery Invest. Lond.,1950
4. Echo sounding and the pelagic fisheries;Hodgson;Fishery Invest. Lond.,1950
5. Echo sounding experiments on fish;Cushing;J. Cons. perm. int. Explor. Mer,1952