Das, S.; Marpna, L. B.; Vishwakarma, J. N. Efficient, Environment Friendly and Regioselective Synthetic Strategy for 2 3-Substituted-8,8-Dimethyl-8,9-dihydropyrazolo[1,5-a]quinazolin-6(7H)-Ones and Their Structure Elucidation. Eur. J. Chem. 2022, 13, 41-48.