Tsolova, Venera, Martin Banov, Milena Harizanova, Natalya Andreeva, and Ивона Никова. 2016. “Analysis оf Geoecological State оf Soils From Industrial Areas in the Vratsa Balkan. I. Alluvial And Alluvial (Diluvial) - Meadow Soils Along the Iskar River in the Sector Between Villages of Lyutibrod and Kunino”. Bulgarian Journal of Soil Science, Agrochemistry and Ecology 50 (2): 66-76. https://agriacad.eu/ojs/index.php/bjssae/article/view/2020.