@Article{HenglEtAl2015,
  Title                    = {Mapping soil properties of {A}frica at 250~{m} resolution: random forests significantly improve current predictions},
  Author                   = {Hengl, Tomislav and Heuvelink, Gerard B. M. and Kempen, Bas and Leenaars, Johan G. B. and Walsh, Markus G. and Shepherd, Keith D. and Sila, Andrew and MacMillan, Robert A. and Mendes de Jesus, Jorge and Tamene, Lulseged and et al.},
  Journal                  = {PLOS ONE},
  Pages                    = {e0125814},
  Volume                   = {10},
  Year                     = {2015},
  Month                    = {Jun},
  Number                   = {6},
  DOI                      = {10.1371/journal.pone.0125814},
  File                     = {HenglEtAl2015.pdf:HenglEtAl2015.pdf:PDF},
  ISSN                     = {1932-6203},
  Keywords                 = {regression-kriging; ordinary kriging;},
  Owner                    = {alessandro},
  Publisher                = {Public Library of Science (PLoS)},
  URL                      = {http://dx.doi.org/10.1371/journal.pone.0125814}
}

@Article{Samuel-RosaEtAl2015,
  Title                    = {Do more detailed environmental covariates deliver more accurate soil maps?},
  Author                   = {Alessandro Samuel-Rosa and Gerard B M Heuvelink and Gustavo Mattos Vasques and Lúcia Helena Cunha Anjos},
  Journal                  = {Geoderma},
  Pages                    = {214-227},
  Volume                   = {243-244},
  Year                     = {2015},
  Month                    = {April},
  DOI                      = {10.1016/j.geoderma.2014.12.017},
  File                     = {Samuel-RosaEtAl2015.pdf:Samuel-RosaEtAl2015.pdf:PDF},
  Keywords                 = {mean rank;}
}

@Inproceedings{Samuel-RosaEtAl2015a,
  Title                    = {spsann - optimization of sample patterns using spatial simulated annealing},
  Author                   = {Alessandro Samuel-Rosa and Gerard Heuvelink and Gustavo Vasques and Lúcia Anjos},
  Booktitle                = {Geophysical Research Abstracts - EGU General Assembly 2015},
  Pages                    = {EGU2015-7780},
  Publisher                = {Copernicus},
  Year                     = {2015},
  Volume                   = {17},
  File                     = {Samuel-RosaEtAl2015a.pdf:Samuel-RosaEtAl2015a.pdf:PDF},
  URL                      = {http://meetingorganizer.copernicus.org/EGU2015/EGU2015-7780.pdf}
}

@Inproceedings{Samuel-RosaEtAl2015c,
  Title                    = {Optimization of sample configurations for variogram estimation},
  Author                   = {Alessandro Samuel-Rosa and Gerard B M Heuvelink and Gustavo M Vasques and Lúcia Helena Cunha Anjos},
  Booktitle                = {Pedometrics 2015},
  Publisher                = {Universidad de Córdoba},
  Year                     = {2015},
  Address                  = {Córdoba},
  DOI                      = {10.13140/RG.2.1.1412.1440},
  File                     = {Samuel-RosaEtAl2015c.pdf:Samuel-RosaEtAl2015c.pdf:PDF},
  Keywords                 = {variogram; REML; kriging; nugget; spsann;}
}

@Inproceedings{Samuel-RosaEtAl2015d,
  Title                    = {Optimization of sample configurations for spatial trend estimation},
  Author                   = {Alessandro Samuel-Rosa and Dick J Brus and Gustavo M Vasques and Lúcia Helena Cunha Anjos},
  Booktitle                = {Pedometrics 2015},
  Publisher                = {Universidad de Córdoba},
  Year                     = {2015},
  Address                  = {Córdoba},
  DOI                      = {10.13140/RG.2.1.2198.5769},
  File                     = {Samuel-RosaEtAl2015d.pdf:Samuel-RosaEtAl2015d.pdf:PDF},
  Keywords                 = {sampling; random forest; linear regression; spsann;}
}