Narayana VR, Varala R. Studies on SO4?2/SnO2 (STO)-Catalyzed C3- and O-Alkylation of 4-Hydroxycoumarin. crdc-v2 [Internet]. 2Jun.2020 [cited 18Jun.2026];:56-. Available from: https://stm1.bookpi.org/index.php/crdc-v2/article/view/1352