inst/CITATION
van Etten J (2017). “R Package gdistance: Distances and Routes on Geographical Grids.” Journal of Statistical Software, 76(13), 1-21. doi:10.18637/jss.v076.i13.
@Article{, author = {Jacob {van Etten}}, title = {R Package gdistance: Distances and Routes on Geographical Grids}, doi = {10.18637/jss.v076.i13}, year = {2017}, month = {feb}, publisher = {Foundation for Open Access Statistics}, volume = {76}, number = {13}, pages = {1-21}, journal = {Journal of Statistical Software}, }