@article{GDZPPN002036282,
title = {A solution to a problem of J. Schwaiger.},
journal = {Aequationes mathematicae},
volume = {33},
year = {1987},
pages = {38-44},
zbl = {0619.39006},
url = {http://dml.mathdoc.fr/item/GDZPPN002036282}
}
Gajda, Zbigniew. A solution to a problem of J. Schwaiger.. Aequationes mathematicae, Tome 33 (1987) pp. 38-44. http://gdmltest.u-ga.fr/item/GDZPPN002036282/