@article{Vasil'ev2018the,
author={Vasil'ev, O.A. and Kir'yanov, D.P.},
title={The chemical composition of the solid fraction products biogas plant,  OOO "NPO "Agrobiogaz"},
journal={Vestnik of Kazan State Agrarian University},
publisher={Kazan state agrarian University},
year={2018},
pages={5-7},
volume={12},
issue={4},
}