@article{02236278, title = {On }, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2005}, year = {2005}, pages = {1675-1684}, doi = {10.1155/IJMMS.2005.1675}, zbl = {1094.06013}, language = {en}, url = {http://dml.mathdoc.fr/item/02236278} }
Zhan, Jianming; Liu, Yong Lin. On . International Journal of Mathematics and Mathematical Sciences, Tome 2005 (2005) pp. 1675-1684. doi : 10.1155/IJMMS.2005.1675. http://gdmltest.u-ga.fr/item/02236278/