@article{Udalova2021about,
author={Udalova, O.R. and Mirskaya, G.V. and Kononchuk, P.Y. and Panova, G.G.},
title={About the influence of solutions of fulvic acids from sapropel on lettuce plants in various types of its processing},
journal={Agrarian Bulletin of the},
publisher={Ural State Agrarian University},
year={2021},
pages={22-33},
volume={209},
issue={06},
}