@article{1183494381,
author = {Whyburn, W. M.},
title = {A set of cyclicly related functional equations},
journal = {Bull. Amer. Math. Soc.},
volume = {36},
number = {11},
year = {1930},
pages = { 863-868},
language = {en},
url = {http://dml.mathdoc.fr/item/1183494381}
}
Whyburn, W. M. A set of cyclicly related functional equations. Bull. Amer. Math. Soc., Tome 36 (1930) no. 11, pp. 863-868. http://gdmltest.u-ga.fr/item/1183494381/