TY  - RPRT
TI  - The quest for the perfect gravity anomaly: Part 1 - New calculation standards
AU  - X. Li
AU  - T.G. Hildenbrand
AU  - W. J. Hinze
AU  - Gordon R. Keller
AU  - D. Ravat
AU  - M. Webring
PY  - 2006
DO  - 10.1190/1.2370391
UR  - https://pubs.usgs.gov/publication/70031060
ID  - 70031060
ER  -