For citations:

Dolgov S.V., Koronkevich N.I. Modern Changes of Nutrients’ Removal into the Southern forest zone Rivers of volga Basin. Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2019;(5):43-55. (In Russ.) https://doi.org/10.31857/S2587-55662019543-55