@article{GDZPPN00203705X,
title = {An extremal problem related to probability.},
journal = {Aequationes mathematicae},
volume = {33},
year = {1987},
pages = {316-324},
zbl = {0632.60074},
url = {http://dml.mathdoc.fr/item/GDZPPN00203705X}
}
Rätz, Jürg; Russell, Dennis. An extremal problem related to probability.. Aequationes mathematicae, Tome 33 (1987) pp. 316-324. http://gdmltest.u-ga.fr/item/GDZPPN00203705X/