1. Stone Decay and Conservation;Amoroso,1983
2. Marble tombstones in national cemeteries as indicators of stone damage: general methods;Baer,1983
3. Acid rain and material damage in stone;Baer,1982
4. Properties of carbonate rock related to SO2 reactivity;Borgwardt;Envir. Sci. Technol.,1972
5. The removal of atmospheric sulphur by building stones;Brown;Atmospheric Environment,1970