Sawidis, T., G. Baycu, E. Metentzoglou, M. Mitrakas, and E. Vasara. “Impact of Manganese, Nickel and Zinc Distribution from Lignite Fuels on Cultivated and Non- Cultivated Plants”. Global Journal Of Botanical Science, vol. 9, June 2021, pp. 21-34, doi:10.12974/2311-858X.2021.09.4.