TY  - RPRT
TI  - Calculation of 230ThU isochrons, ages, and errors
AU  - K.R. Ludwig
AU  - D.M. Titterington
PY  - 1994
DO  - 10.1016/0016-7037(94)90229-1
UR  - https://pubs.usgs.gov/publication/70017618
ID  - 70017618
ER  -