Rao, N. L. ., A. . Prasad, D. Rambabu, and M. V. B. . Rao. “SYNTHESIS OF SOME NOVEL INDOLINE DERIVATIVES”. Caribbean Journal of Sciences and Technology, vol. 1, no. 1, Jan. 2013, pp. 203-7, https://caribjscitech.com/index.php/cjst/article/view/112.