TY  - GEN
AU  - Hofmann-Wellenhof, B
AU  - Hofmann-Wellenhof, B
AU  - Lichtenegger, H
AU  - Collins, J
TI  - GPS: theory and practice. - 5th rev. ed. ,
SN  - 9 788181 287519
PY  - 2007///
CY  - New Delhi
PB  - Springer (India) Private limited
KW  - Surveying
ER  -