TY  - RPRT
TI  - Ground-water models cannot be validated
AU  - Leonard F. Konikow
AU  - J.D. Bredehoeft
PY  - 1992
DO  - 10.1016/0309-1708(92)90033-x
UR  - https://pubs.usgs.gov/publication/70016167
ID  - 70016167
ER  -