O. . Šindelá, D. Adamcová, J. Zloch, and M. . D. Vaverková, “Phytotoxicity of sewage sludge from selected wastewater treatment plants – new opportunities in sewage sludge treatment”, Int. J. Recycl. Org. Waste Agric., vol. 9, no. 1, Mar. 2020, doi: 10.30486/ijrowa.2020.1885285.1002.