TY  - RPRT
TI  - FFTFIL; a filtering program based on two-dimensional Fourier analysis of geophysical data
AU  - T.G. Hildenbrand
PY  - 1983
DO  - 10.3133/ofr83237
UR  - https://pubs.usgs.gov/publication/ofr83237
ID  - ofr83237
ER  -