Khan, Hamayun, Abdul Latif Khan, Javid Hussain, Mohammad Adnan, Iqbal Hussain, Taous Khan, and Abdur Rahman Khan. 2008. “Review Sesquiterpenes: The Potent Antioxidants”. Biological Sciences - PJSIR 51 (6):343-50. https://v2.pjsir.org/index.php/biological-sciences/article/view/711.