@article{012965719, title = "Effect of long-term fertilization on the content of heavy metals in leached chernozem and products of a grain-beet crop rotation", author = "Kurakov, V.I. and Minakova, O.A. and Aleksandrova, L.V.", year = "2006", journal = "Agrokhimiya", volume = "11", pages = "59-65", url = "https://eurekamag.com/research/012/965/012965719.php" }