Reservoir Effect and C14 Chronology of the Catacomb cultures of the North-West Caspian Steppe Area: a case stuy - Plicht, Johannes van der; Shishlina, Natalya I.; Hedges, R. E. M.; Zazovskaya, E. P.; Sevastianov, V. S.; Chichagova, O. A. (2006)