1. ACSM/ASCE. (1978). Definitions of surveying and associated terms Am. Congr. Surv. Map. Bethesda Md. ASCE Reston Va.
2. ASCE/ACSM/ASPRS. (1994). Glossary of the mapping sciences ASCE Reston Va. Am. Congr. Surv. Map. Bethesda Md. Am. Soc. Photogrammetry and Remote Sensing Bethesda Md.
3. Bomford G. (1971). Geodesy 3rd Ed. Oxford Univ. Press Oxford England.
4. Computation of Horizontal/Level Distances
5. Using GPS Results in True 3‐D Coordinate System