TY  - RPRT
TI  - The International GPS Service (IGS) as a Continuous Reference System for Precise GPS Positioning
AU  - Neilan, Ruth
AU  - Heflin, Michael
AU  - Watkins, Michael
AU  - Zumberge, James
PY  - 1996
UR  - https://ntrs.nasa.gov/citations/20060036040
ID  - 20060036040
ER  -