TY  - RPRT
TI  - Regression modeling of ground-water flow; Supplement 1 : modifications to the computer code for nonlinear regression solution of steady-state ground-water flow problems
AU  - Richard L. Cooley
PY  - 1993
DO  - 10.3133/twri03b4_supp
UR  - https://pubs.usgs.gov/publication/twri03B4_supp
ID  - twri03B4_supp
ER  -