@misc{indiciae5358a87657b7,
  title = {A method to combine non-probability sample data with probability sample data in estimating spatial means of environmental variables.},
  author = {D J Brus and J J de Gruijter},
  year = {2003},
  doi = {10.1023/a:1022618406507},
  url = {https://pubmed.ncbi.nlm.nih.gov/12718515/},
  note = {Source identifier: 12718515}
}