TY - RPRT TI - Frequency domain, waveform inversion of laboratory crosswell radar data AU - Karl J. Ellefsen AU - Aldo T. Mazzella AU - Robert Horton AU - Jason R. McKenna PY - 2010 DO - 10.1190/1.3513697 UR - https://pubs.usgs.gov/publication/70047051 ID - 70047051 ER -