TY  - RPRT
TI  - HANDTC, a Fortran program to calculate innerzone terrain corrections
AU  - J.B. Spielman
AU  - David A. Ponce
PY  - 1984
DO  - 10.3133/ofr84777
UR  - https://pubs.usgs.gov/publication/ofr84777
ID  - ofr84777
ER  -