S. Kulac, Y. Cıkılı, H. Samet, and E. Filiz, “Physiological, Nutritional, And Biochemical Responses Under Nickel Toxicity in Black Poplar (Populus nigra): Nickel toxicity in black poplar”, J. BioSci. Biotechnol., vol. 7, no. 2-3, pp. 135–142, Feb. 2019.