TY  - RPRT
TI  - Steady state fractionation of heavy noble gas isotopes in a deep unsaturated zone
AU  - Alan M. Seltzer
AU  - Jeffrey P. Severinghaus
AU  - Brian J. Andraski
AU  - David A. Stonestrom
PY  - 2017
DO  - 10.1002/2016wr019655
UR  - https://pubs.usgs.gov/publication/70188024
ID  - 70188024
ER  -