TY  - RPRT
TI  - A note on drillhole depths required for reliable heat flow determinations
AU  - David S. Chapman
AU  - Jack Howell
AU  - John H. Sass
PY  - 1984
DO  - 10.1016/0040-1951(84)90070-2
UR  - https://pubs.usgs.gov/publication/70013358
ID  - 70013358
ER  -