@article{JMPA_1921_8_4__155_0,
     author = {Greenhill, G.},
     title = {The uniaxial potential function (fonction de potentiel) and its orthogonal force function (fonction de force) contrasted},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {155--194},
     publisher = {Gauthier-Villars},
     volume = {Ser. 8, 4},
     year = {1921},
     language = {en},
     url = {http://www.numdam.org/item/JMPA_1921_8_4__155_0/}
}