TY  - RPRT
TI  - U.S. Geological Survey potential-field geophysical software, version 2.0: Documentation
AU  - Lindrith E. Cordell
AU  - Jeffrey D. Phillips
AU  - Richard H. Godson
PY  - 1992
DO  - 10.3133/ofr9218a
UR  - https://pubs.usgs.gov/publication/ofr9218A
ID  - ofr9218A
ER  -