1. Mehra, S. R. “A Note on Manufacture of Packaged Lime-reactive Surkhi Mixture for Use in Building Mortars and Foundation Concrete,” issued by Central Road Research Institute, New Delhi, August (1965).
2. “Pozzolanic Clays of India, their Industrial Exploitation and use in Engineering Works,” Central Road Research Institute, New Delhi, Special Report No. 1, August (1964).
3. Perry's Chemical Engineering Handbook, 3rd edn., McGraw-Hill Book Co., London (1950).
4. I. S. Specification No. 1344–1968.