Ranjan, Rajeeva, Rekha Rani, S. Suman Singh, A.K. Singh (Jr), and S. Sharma. 2010. “Tetragonal Distortion Parameter of Some Nickel(II) Complexes”. Asian Journal of Chemistry 22 (10):7580-84. https://asianpubs.org/index.php/ajchem/article/view/12057.