1. College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou, People’s Republic of China
2. National Research Center for Conservation of Ancient Wall Paintings, Dunhuang, People’s Republic of China
3. Key Scientific Research Base of Conservation for Ancient Murals (Dunhuang Academy) of State Administration of Cultural Heritage, Dunhuang, People’s Republic of China
4. Dunhuang Academy, Mogao Grottoes, Dunhuang, People’s Republic of China
5. Technology Service Center for the Cultural Heritage Conservation, Dunhuang Academy, Lanzhou, People’s Republic of China