Giosan L., Donnelly J.P, Constantinescu S., Filip F., Ovejanu I., Vespremeanu-Stroe A., Vespremeanu E., Duller G.AT.  2006.  Young Danube delta documents stable Black Sea level since the middle Holocene: Morphodynamic, paleogeographic, and archaeological implications. Geology. 34(9):757-760.