TY  - RPRT
TI  - Hypermag: An interactive, two-dimensional gravity and magnetic modeling program
AU  - R. W. Saltus
AU  - Richard J. Blakely
PY  - 1983
DO  - 10.3133/ofr83241
UR  - https://pubs.usgs.gov/publication/ofr83241
ID  - ofr83241
ER  -