1. Aleksenko II. 1967. Sulfur of the Pre-Carpathian. Moscow: Nedra. 303 p. (in Russian).
2. Andrejchuk VN. 1988. The tectonic factor and peculiarities of the sulfate karst of Bukovina: geology, geomorphology and hydrogeology of karst. Sverdlovsk: Institute of Geology and Geochemistry. 66 p. (in Russian).
3. Babinets AE, Tsapenko II. 1960. On conditions of the formation waters enriched in hydrogen sulfide at the boundary between the northwest margin of the Russian Platform and the Carpathian Foredeep. Geol Zh XX:33-49. (in Ukrainian).
4. A marine microbial consortium apparently mediating anaerobic oxidation of methane
5. Native sulfur deposition in the Castile Formation, Culberson County, Texas