Chinnayya Setty, N. Krishnarao, B. V. Durgarao, V. Narasingrao, P. Ramalakshmi, and Shaik Lakshman, “Bio Active Solvent Free Synthesis of 7,7-dimethyl-4-Phenyl -Tetra Hydro Quinazaloine-(1H,3H)- 2,5-Diones Derivatives Employing Methanesulfonic Acid”, CACS-V7, pp. 130–139, Dec. 2021.