[1] Salimbeni R, Pini R, Siano S, et al. Assessment of the state of conservation of stone artworks after laser cleaning：comparison with conventional cleaning results on a two-decade follow up［J］. Journal of Cultural Heritage, 2000：385-391.
[2] Orial G, Gaufillet J. Nettoyage des monuments historiques par dsincrustation photonique des salissures［J］. Technologie Industrielle. Conservation Restauration Du Patrimoine Culturelle. Colloque AFTPV/SFIIC, Nice, 1989：118-125.
[3] Cooper M, Emmony D, Larson J. Characterization of laser cleaning of limestone［J］. Optics and Laser Technology, 1995, 27：69-73.
[4] Calcagno G, Pummer E, Koller M. St. Stephen's Church in Vienna：criteria for Nd：YAG laser cleaning on an architectural scale［J］. Journal of Cultural Heritage, 2000,（1）：111-117.
[5] Rivas T, Lopez A, Ramil A, et al. Comparative study of ornamental granite cleaning using femtosecond and nanosecond pulsed lasers［J］. Applied surface science, 2013, 278：226-233.
[11] Bartoli L, Pouli P, Fotakis C, et al. Characterization of Stone Cleaning by Nd：YAG Lasers with Different Pulse Duration［J］. Laser Chemistry, 2006, 2006：1-6.
[12] Zhao M, Liu T, Jiang J, et al. Effect of defocusing distance on the contaminated surface of brass ring with nanosecond laser in a 3D laser scanning system［J］. Optics and lasers in Engineering, 2014, 59（8）：11-18.
