@misc{indiciae4f392b4bb993, title = {Forward modeling computer program for the very low frequency, radio-wave, terrain-resistivity electromagnetic method: VLF.BAS}, author = {Deborah G. Grantham and F.P. Haeni and David L. Mazzaferro}, year = {1986}, doi = {10.3133/ofr86407w}, url = {https://pubs.usgs.gov/publication/ofr86407W}, note = {Source identifier: ofr86407W} }