@article{01049432, title = {The }, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {20}, year = {1997}, pages = {33-36}, doi = {10.1155/S0161171297000057}, zbl = {0904.11042}, language = {en}, url = {http://dml.mathdoc.fr/item/01049432} }
Caragiu, Mihai; Caragiu, Mellita. The . International Journal of Mathematics and Mathematical Sciences, Tome 20 (1997) pp. 33-36. doi : 10.1155/S0161171297000057. http://gdmltest.u-ga.fr/item/01049432/