[ASPRS, American Society for Photogrammetry and Remote Sensing. (1993). ASPRS accuracy standards for large-scale maps. Bethesda (MD): ASPRS, USA.]Search in Google Scholar
[Bomford, G. (1977), Geodesy. 3rd edition, Oxford Univ. Press, London, UK.]Search in Google Scholar
[El-Ashmawy, K., and A.B. Azeez (2005). Generation of Mathematical Digital Terrain Model (DTM) Data for Testing DTM Generation Methodologies. Engineering Research Journal, Faculty of Engineering, University of Helwan, Egypt, Vol. 102, pp C 33 – C 49.]Search in Google Scholar
[Golden Software (2012), Surfer Version 11: Reference Manual. Golden Software, Inc., Golden, Colorado, U.S.A.]Search in Google Scholar
[Google (2015), About Google Earth: Understanding Google Earth imagery. Retrieved May 2, 2015 from http://earth.google.com/support/bin/answer.py?&answer=176147.]Search in Google Scholar
[Gregory, K. (1998), Special Edition Using Visual C++ 6. Que, USA.]Search in Google Scholar
[Hoffmann, E. and F. Winde (2010). Generating high-resolution digital elevation models for wetland research using Google EarthTM imagery: an example from South Africa, Water SA. (Online), Vol. 36, pp. 53-68. (Accessed on 09/04/2014).]Search in Google Scholar
[Milne, P.H. (1987), Computer Graphics for Surveying. E.&F.N. Spon Ltd., London, UK.]Search in Google Scholar
[Sharma, A., Tiwari, K.N. and P.B.S. Bhadoria (2010), Vertical Accuracy of Digital Elevation Model from Shuttle Radar Topographic Mission – A Case Study, Geocarto International, Vol. 25, No 4, pp 257-267.]Search in Google Scholar
[Terrain Zonum (2015), Retrieved on October 12, 2015, from http://www.zonums.com/gmaps/terrain.php.]Search in Google Scholar
[Topcon (2013), Retrieved on March 25, 2013 from http://www.topcon.co.jp/en/index.html]Search in Google Scholar