@article{1077474130,
author = {Kasner, Edward and De Cicco, John},
title = {Groups of harmonic transformations},
journal = {Duke Math. J.},
volume = {14},
number = {1},
year = {1947},
pages = { 327-338},
language = {en},
url = {http://dml.mathdoc.fr/item/1077474130}
}
Kasner, Edward; De Cicco, John. Groups of harmonic transformations. Duke Math. J., Tome 14 (1947) no. 1, pp. 327-338. http://gdmltest.u-ga.fr/item/1077474130/