TY  - RPRT
TI  - Geological Survey Computer Contribution Number 3 Nonconstant Variance Regresion Analysis Program
AU  - Marshall Strong Hellmann
PY  - 1970
DO  - 10.3133/ofr70159
UR  - https://pubs.usgs.gov/publication/ofr70159
ID  - ofr70159
ER  -