@article{1183504138,
author = {Jones, F. B.},
title = {Connected and disconnected plane sets and the functional equation $f\left( x \right) + f\left( y \right) = f\left( {x + y} \right)$},
journal = {Bull. Amer. Math. Soc.},
volume = {48},
number = {12},
year = {1942},
pages = { 115-120},
language = {en},
url = {http://dml.mathdoc.fr/item/1183504138}
}
Jones, F. B. Connected and disconnected plane sets and the functional equation $f\left( x \right) + f\left( y \right) = f\left( {x + y} \right)$. Bull. Amer. Math. Soc., Tome 48 (1942) no. 12, pp. 115-120. http://gdmltest.u-ga.fr/item/1183504138/