Please cite fields including its version and DOI as
Douglas Nychka, Reinhard Furrer, John Paige, Stephan Sain (2021). “fields: Tools for spatial data.” R package version 16.3, https://github.com/dnychka/fieldsRPackage.
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 16.3}, organization = {University Corporation for Atmospheric Research}, address = {Boulder, CO, USA}, year = {2021}, url = {https://github.com/dnychka/fieldsRPackage}, }