@article{GDZPPN002025299,
title = {Rado's Inequality},
journal = {Aequationes mathematicae},
volume = {7},
year = {1971},
pages = {149-156},
zbl = {0222.26016},
url = {http://dml.mathdoc.fr/item/GDZPPN002025299}
}
BULLEN, P.S. Rado's Inequality. Aequationes mathematicae, Tome 7 (1971) pp. 149-156. http://gdmltest.u-ga.fr/item/GDZPPN002025299/