1. Raev L, Voinov E, Ivanov I, Popov D. Antitumor activity of some coumarin derivatives. Pharmazie. 1990;45(9):696-698
2. Nofal ZM, El-Zahar M, Abd El-Karim S. Novel coumarin derivatives with expected biological activity. Molecules. 2000;5(2):99-113. DOI: 10.3390/50200099
3. El-Agrody AM, Abd El-Latif MS, El-Hady NA, Fakery AH, Badair AH. Heteroaromatisation with 4-hydroxycoumarin part 2. Molecules. 2001;6(6):519-527. DOI: 10.3390/60600519
4. Patibha S, Shreeya P. Synthesis, characterization and antimicrobial studies of some novel 3-arylazo-7-hydroxy-4-methylcoumarin. Indian Journal of Chemistry. 1999;38B:1139-1142
5. Patonay T, Litkei GY, Bognar R, Erdei J, Misztic C. Synthesis, antimicrobial and antifungal activity of 4-hydroxycoumarin derivatives, analogues of Novobiocin. Pharmazie. 1984;39:86-91