Potelov, V.A.; Chernook, V.I. (1991). Seals survey by IL-18 Dorr plane. CM Documents - ICES, C.M. 1991(N:15). International Council for the Exploration of the Sea: Copenhagen. [no pag.] pp.
Part of: ICES CM Documents - ICES. ICES: Copenhagen. ISSN 1015-4744