R Asha, B Babu Rao, and B Rama Rao. “Synthesis and Screening of New 2-(2-Oxoindoline-3-Ylidene)-NPhenyl Hydrazine Carbothioamides”. International Journal of Pharmacy and Analytical Research, vol. 3, no. 1, Feb. 2014, pp. 140-6, doi:10.61096/ijpar.v3.iss1.2014.140-146.