1. Canada Centre for Mapping and Earth Observation, “Tutorial: Fundamentals of Remote Sensing,” 2016, (19 July 2018).
2. Literature Survey of Underground Construction Methods for Application to Hardened Facilities, Technical Report M-85/11, US Army Corps of Engineers;Kao,1985
3. Underground Facilities: Intelligence and Targeting Issues;Richelson,2013
4. National archives for national survey programmes: NMP and the English heritage aerial photograph collection;Winton;Landscapes through the Lens. Aerial Photographs and Historic Environment, Aerial Archaeology Research Group No. 2,2010
5. Identification of archaeological buried remains based on the normalized difference vegetation index (NDVI) from Quickbird satellite data