1. Acharya CL, Sukla B, Misra VN (2005) Biological elimination of sulphur from high sulphur coal by Aspergillus-like fungi. Fuel 84(12): 1597–1600. http://doi.org/10.1016/j.fuel.2005.02.020
2. Barton HA (2006) Introduction to cave microbiology: a review for the non-specialists. Journal of Cave and Karst Studies 68: 43–52.
3. Bastian F, Jurado V, Novakova A, et al. (2010) The microbiology of Lascaux Cave. Microbiology 156: 644–652. http://doi.org/10.1099/mic.0.036160-0
4. Branch Z (2012) Biological synthesis of silver nanoparticles by Aspergillus flavus isolated from soil of Ahar copper mine. Indian Journal of Science and Technology 5(s3): 2443–2444.
5. Butkiewicz T (1968) Crystalline schists in the Krowiarki Range of the Kłodzko Mts. Geologia Sudetica 4: 47–113(In Polish).