@article{01555476,
title = {Solution of a problem of G. P\'olya.},
journal = {Matematichki Vesnik},
volume = {48},
year = {1996},
pages = {47-50},
zbl = {0957.52004},
language = {en},
url = {http://dml.mathdoc.fr/item/01555476}
}
Janković, Vladimir. Solution of a problem of G. Pólya.. Matematichki Vesnik, Tome 48 (1996) pp. 47-50. http://gdmltest.u-ga.fr/item/01555476/