Singh, L., Tyagi, N., P. Dhaka, N., & Sindhu, S. (2010). Synthesis, Spectral and Thermal Studies of Some Lanthanide (III) Complexes of 4-[N-(Benzalidene) Amino] Antipyrine Thiosemicarbazone. Asian Journal of Chemistry, 11(2), 503–508. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/23312