1 | Hofmann-Wellenhof, B., Lichtenegger, H., Collins, J. (1997). Global Positioning System – Theory and Practice, Springer-Press, Wien. |
2 | Leick, A. (1995), GPS Satellite Surveying,John Wiley |
3 | Seeber, G., (1993). Satellite Geodesy, Walter de Gruyter, Berlin. |