IGNATOV, I., N. VALCHEVA, S. MIHAYLOVA, and G. DINKOV. “PHYSICOCHEMICAL AND MICROBIOLOGICAL RESULTS OF HYPERTHERMAL (HOT) MINERAL WATER IN RUPITE, BULGARIA AS MODEL SYSTEM FOR ORIGIN OF LIFE”. UTTAR PRADESH JOURNAL OF ZOOLOGY, vol. 41, no. 24, Jan. 2021, pp. 16-22, https://www.mbimph.com/index.php/UPJOZ/article/view/1824.