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   2. Bang, S.S., Galinat, J.K., and Ramakrishnan, “Calcite Precipitation Induced by Polyurethane Immobilized Bacillus)Pasteurii,” Enzyme and Microbial Technology, vol.28, 2001, pp. 404–409.
   3. De Muynck W., Cox K., De Belie N. and Verstraete W“Bacterial carbonate precipitation as an alternative surface treatment for concrete”, Constr Build Mater, 22, 875-885 (2008).
   4. Ghosh P, Mandal S, Chattopadhyay BD, Pal S., “Use of microorganism to improve the strength of cement mortar.” Cement and Concrete Research 35, 2005, pp.1980-1983.
   5. H. M. Jonkers and E. Schlangen, “A two component bacteria-based self-healing concrete,” Concrete Repair, Rehabilitation and Retrofitting II, 2009, pp. 215–220.
   6. F. Hammes, N. Boon, J. De Villiers, W. Verstraete, S. D. Siciliano, and J. De Villiers, “Strain-Specific Ureolytic Microbial Calcium Carbonate Precipitation,” Applied And Environmental Microbiology, vol.69, no.8, 2003, pp. 4901– 4909.
   7.  IS 10262,”Recommended Guideline ForConcrete Mix Design”.
   8. IS 456:2000,”Plain and Reinforced Concrete-Code of Practice”.