G. Nalini, “Synthesis, characterization and thermal decomposition of ethyl-2’-amino-5’-cyano-6’-(1H-indole-3yl)-2-oxospiro[indoline-3,4’-pyran]-3’-carboxylate under non‐isothermal condition in nitrogen atmosphere”, Eur. J. Chem., vol. 10, no. 1, pp. 72–81, Mar. 2019.