Kodina, L. A.; Generalova, V. N.; Bogacheva, M. P. (1979): Komponentnyy sostav bitumoidov otlozheniy Marokkanskoy vpadiny Atlanticheskogo okeana Composition of bituminoids from deposits of the Morocco Basin, Atlantic Ocean. Rossiyskaya Akademiya Nauk, Moscow, USSR, Geokhimiya, 1979 (1), 127-137, georefid:1985-013152