TY  - RPRT
TI  - A method to combine non-probability sample data with probability sample data in estimating spatial means of environmental variables.
AU  - D J Brus
AU  - J J de Gruijter
PY  - 2003
DO  - 10.1023/a:1022618406507
UR  - https://pubmed.ncbi.nlm.nih.gov/12718515/
ID  - 12718515
ER  -