Michalík, Maroš, Zuzana Kompišová Ballová, and Martin Kompiš. “Impact of Biodegradable Lubricant Oils on Soil Element Concentrations”. Oecologia Montana 29, no. 1 (July 31, 2020): 1-8. Accessed March 29, 2024. http://om.vuvb.uniza.sk/index.php/OM/article/view/331.