S. Ćavar and F. Kovač, “Three novel 4-methylcoumarin derivatives”, Glas. hem. tehnol. Bosne Herceg., vol. 38, pp. 1–4, Jul. 2012, Accessed: Aug. 31, 2026. [Online]. Available: https://glashem.pmf.unsa.ba/index.php/bctbh/article/view/79