TY  - RPRT
TI  - Semivariogram modeling by weighted least squares
AU  - X. Jian
AU  - Ricardo A. Olea
AU  - Y.-S. Yu
PY  - 1996
DO  - 10.1016/0098-3004(95)00095-x
UR  - https://pubs.usgs.gov/publication/70018459
ID  - 70018459
ER  -