Resumption of hydrogen sulfide contamination of the water column of deep basin in the Caspian Sea,
Ivanov, M. V., A. S. Savvichev, A. A. Klyuvitkin, E. E. Zakharova, I. I. Rusanov, A. Yu. Lein, A. P. Lisitzin, A. L. Chul'tsova (2013),
Doklady Earth Sciences, 453, 1 p. 1094–1099