@article{Jenks1963,
author = {Jenks, G. F.},
title= {Generalization in Statistical Mapping},
year = {1963},
doi = {10.1111/j.1467-8306.1963.tb00429.x },
journal = {Annals of the Association of American Geographers},
volume = {53},
number = {1},
pages = {15--26},
}