@article{00697108,
title = {On },
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {17},
year = {1994},
pages = {687-692},
doi = {10.1155/S0161171294000979},
zbl = {0809.54017},
language = {en},
url = {http://dml.mathdoc.fr/item/00697108}
}
Kovár, Martin M. On . International Journal of Mathematics and Mathematical Sciences, Tome 17 (1994) pp. 687-692. doi : 10.1155/S0161171294000979. http://gdmltest.u-ga.fr/item/00697108/