1. Chakraborty, D. P., Dasgupta, A. and Bose, P. K., Antifungal action of some natural coumarins.Ann, Biochem. and Exptl. Med. (Calcutta), 17, 59–62 (1957) [C. A. 52, 1352].
2. El-Deen, I. M., Synthesis and reaction of a 4-methyl-3-(3′-thioxo)-1′-2′-4′-triazol-5′-ylcoumarin.J. Indian. Chem. Soc., 69 (1992).
3. El-Deen, I. M., Abd El-Fattah, M. E. and El Tamany, S. H., Some reactions of 5-mercapto-3,4 (di-p-chlorophenyl)-2,3-dihydro-1,2,4-triazole.Arch. Pharm. Res., 17, 294–297 (1994).
4. El-Kerdawy, M. M., Eisa, M., Barghash, A. and Marouf, A., Development of some 1,3,4-oxadiazoles, a 1,3,4-thiadiazol as potential antimicrobial agents.Sulfur, Lett., 10, 57–70 (1989).
5. El-Tamany, S. H., El-Deen, I. M., and El-Fattah, M. E., Synthesis and biological activity of 1-(4-methyl-2-oxo-2H-1-benzopyran-7-yloxoacetyl)-4-alkylthiosemicarbazides; 1,3,4-thiadiazolesand 1,2,4-triazoles.Pak. J. Sci. Ind. Res., 38, 115 (1995).