Modeling of pollution of the water area of the North-Western part of the Black sea with impurity coming from bottom sources 13.08.202008.02.2006 by Светлана Малахатко D. V. Alekseev, V. A. Ivanov, E. V. Ivancha, V. V. Fomin, L. V. Cherkesov Full text in PDF(RUS)