@article{GDZPPN002224992,
title = {Uniqueness in the first maximum problem.},
journal = {Manuscripta mathematica},
volume = {43},
year = {1983},
pages = {101-104},
zbl = {0516.47004},
url = {http://dml.mathdoc.fr/item/GDZPPN002224992}
}
Ptak, Vlastimil. Uniqueness in the first maximum problem.. Manuscripta mathematica, Tome 43 (1983) pp. 101-104. http://gdmltest.u-ga.fr/item/GDZPPN002224992/