@article{00753690, title = {An application of the Sakai's theorem to the characterization of }, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {18}, year = {1995}, pages = {317-322}, doi = {10.1155/S0161171295000408}, zbl = {0830.46044}, language = {en}, url = {http://dml.mathdoc.fr/item/00753690} }
Zalar, Borut. An application of the Sakai's theorem to the characterization of . International Journal of Mathematics and Mathematical Sciences, Tome 18 (1995) pp. 317-322. doi : 10.1155/S0161171295000408. http://gdmltest.u-ga.fr/item/00753690/