Singh, R., Kaushik, S., Yadav, P., & Prajapati, P. K. (2021). Antioxidant Profile of Shilajatu (Asphaltum punjabinum): Impact of Drava/Media and Bhumi/Geography. Free Radicals and Antioxidants, 11(1), 19–23. https://doi.org/10.5530/fra.2021.1.4