TY  - BOOK
AU  - "Hofmann-Wellenhof, B."
AU  - "Lichtenegger, H.""Collins, J."
TI  - Global Positioning System: Theory and Practice
SN  - 3211825916
U1  - 623.893 
PY  - 1994///
CY  - New York
PB  - Springer
ER  -