1. 10) SCHAFFER R. J. The Weathering of Natural Building Stones. HMSO. (1932)
2. 11) WINKLER E. M. Stone : Properties, Durability in Man's Environment. Springer-Verlag. (1975)
3. 12) International Congress on Deterioration and Conservation of Stone.
4. 14) NAKAYAMA M. Deterioration associated with natural defects inherent in stones. 7th International Congress on Deterioration and Conservation of Stone. (1992) p.837-844.
5. 16) FOLK R. L. Spectral subdivision of limestone types. Amer. Petrol. Geol., Memoir 1. (1962)