Natural oil and gas seeps on the Black Sea floor.Published in:Geo-Marine Letters, 2004, v. 24, n. 3, p. 150, doi. 10.1007/s00367-004-0171-4By:Kruglyakova, R. P.;Byakov, Y. A.;Kruglyakova, M. V.;Chalenko, L. A.;Shevtsova, N. T.Publication type:Article