1. Chen R (2002) Analysis of sulfation rate on environmental pollution and prevention measures in Yungang Grottoes. J Datong Vocat Coll 16(3):64–67
2. Guo Q, Wang X, Xue P et al (2009) Research on spatial distribution and relations of salinity and moisture content inside rock mass of low-layer caves in Dunhuang Mogao grottoes. Chin J Rock Mech Eng 28(2):3770–3776
3. Huang K (1984) Weathering problem of sandstone carving in Yungang Grottoes. Hydrogeol Eng Geol 3:32–35
4. Huang JZ (2008) Water proof protection for the world cultural heritage of Yungang grottoes. Sci conversat archaeol 20:22–26
5. Huang J, Yuan D (2004) Preliminary research on influence of water and salt on stone carving in Yungang Grottoes. World of Antiquity 5:61–66