@article{031111935, title = "Effect of sewage sludge and salts of heavy metals on the contents of heavy metals and agrochemical properties of soil", author = "Antanaitis,A. and Staugaitis,G. and Antanaitis,S. and Lubyte,J.", year = "2008", journal = "Vagos", pages = ", 7-13. Ef", url = "https://eurekamag.com/research/031/111/031111935.php" }