M. Srivastava, B. Kumar, R. Prasad, N. Kumari, and S. Nand Prasad, “Spectral Studies of Some Transition Metal Chelates with Thiolactic Anilide and Thiolactic-p-Toluidide, Part-II&dagger”;, ajc, vol. 11, no. 4, pp. 1501–1504, Mar. 2010.