BAL, Y., S. KABAN, and S. NIZAMI. “?ANATOLIONE: A NEW DITERPENE FROM MARRUBIUM PARVIFLORUMOLIGODON”. Biological Sciences - PJSIR, vol. 38, no. 3-4, May 1995, pp. 144-5, https://v2.pjsir.org/index.php/biological-sciences/article/view/2457.