@article{article,
title = {The accumulation of chlorophyll in plants under different fertilizer systems in ley rotations.},
author = {},
year = {1951},
journal = {Dokl. Akad. Nauk},
volume = {77},
pages = {909-912},
howpublished = "\url{https://eurekamag.com/research/013/859/013859117.php}"
}