M. Thornbush and H. Viles, “The Changing Facade of Magdalen College, Oxford: Reconstructing Long-Term Soiling Patterns from Archival Photographs and Traffic Records,” Journal of Architectural Conservation, Vol. 11, No. 2, 2005, pp. 40-57.
 H. A. Viles, “The Environmental Sensitivity of Blistering of Limestone Walls in Oxford, England: A Preliminary Study,” In: D. S. G. Thomas and R. J. Allison, Eds., Landscape Sensitivity, John Wiley and Sons Ltd., Chichester, 1993, pp. 308-326.
 M. J. Thornbush and H. A. Viles, “Photographic Monitoring of Soiling and Decay of Roadside Walls in Oxford, England,” Environmental Geology, Vol. 56, No. 3-4, 2008, pp. 777-787. doi:10.1007/s00254-008-1311-3
 M. J. Thornbush, “Photographic Surveys of Building Exteriors in Central Oxford, UK,” International Journal of Architectural Heritage, Vol. 4, No. 4, 2010, pp. 351-369. doi:10.1080/15583050903131355
 M. Thornbush and H. Viles, “Integrated Digital Photography and Image Processing for the Quantification of Colouration on Soiled Surfaces in Oxford, England,” Journal of Cultural Heritage, Vol. 5, No. 3, 2004, pp. 285-290. doi:10.1016/j.culher.2003.10.004
 M. J. Thornbush and H. A. Viles, “Surface Soiling Pattern Detected by Integrated Digital Photography and Image Processing of Exposed Limestone in Oxford, England,” In: C. Saiz-Jimenez, Ed., Air Pollution and Cultural Heritage, A. A. Balkema Publishers, London, 2004, pp. 221-224.
 M. J. Thornbush and H. A. Viles, “Photo-Based Decay Mapping of Replaced Stone Blocks on the Boundary Wall of Worcester College, Oxford,” In: R. Prikryl and B. J. Smith, Eds., Building Stone Decay: From Diagnosis to Conservation, Geological Society, London, 2007, pp. 69-75.
 M. Thornbush, “Grayscale Calibration of Outdoor Photographic Surveys of Historical Stone Walls in Oxford, England,” Color Research and Application, Vol. 33, No. 1, 2008, pp. 61-67. doi:10.1002/col.20374
 M. J. Thornbush, “Measurements of Soiling and Colour Change Using Outdoor Rephotography and Image Processing in Adobe Photoshop along the Southern Facade of the Ashmolean Museum, Oxford,” In: B. J. Smith, M. Gomez-Heras, H. A. Viles and J. Cassar, Eds., Limestone in the Built Environment: Present-Day Challenges for the Preservation of the Past, Geological Society, London, 2010, pp. 231-236.
 M. J. Thornbush, “Digital Photography Used to Quantify the Greening of North-Facing Walls along Broad Street in Central Oxford, UK,” Special Issue on Quantitative Geomorphology, Geomorphologie: Relief, Processus, Environment, No. 2, 2013, pp. 111-118.