1. GONG Zhuo-rong, 2002. LynX Graphic Interface [M]. Beijing: National Defence Industry Press. (in Chinese)
2. IGOR V Veryovkin, WALLIS F Calaway, MICHAEL J Pellin, 2004. A virtual reality instrument: near-future perspective of computer simulations of ion optics [J]. Nuclear Instruments and Methods in Physics Research, A 519: 363–372.
3. JIANG Xin, CHEN Ying, 2002. Management and three dimensional virtualization of the DOM & DEM data [J]. Science of Surveying and Mapping, 27(3): 40–43. (in Chinese)
4. JIN Bo-lu, ZHANG Xi-you, 1994. Researching Volcanic Geology in Mount Changbai [M]. Changchun: Northeast Korean Education Publishing House. (in Chinese)
5. LI Zhi-lin, ZHU Qing, 2003. Digital Elevation Model [M]. Wuhan: Wuhan University of Survey Science and Technology Press. (in Chinese)