Please cite fields including its version and DOI as
Douglas Nychka, Reinhard Furrer, John Paige, Stephan Sain (2017). “fields: Tools for spatial data.” doi: 10.5065/D6W957CT, R package version 10.3, https://github.com/NCAR/Fields.
Corresponding BibTeX entry:
@Misc{, title = {fields: Tools for spatial data}, author = {{Douglas Nychka} and {Reinhard Furrer} and {John Paige} and {Stephan Sain}}, note = {R package version 10.3}, organization = {University Corporation for Atmospheric Research}, address = {Boulder, CO, USA}, year = {2017}, url = {https://github.com/NCAR/Fields}, doi = {10.5065/D6W957CT}, }