@article{Olenin2015negative,
author={Olenin, O.A.},
title={NEGATIVE ECOSYSTEM CHANGES IN AGROBIOGEOCENOSE OF SPRING WHEAT  AT BIOLOGIZATION OF ITS CULTIVATION TECHNOLOGY},
journal={Vestnik of Kazan State Agrarian University},
publisher={Kazan state agrarian University},
year={2015},
pages={84-90},
volume={10},
issue={4},
}