@article{05904698, title = {The }, journal = {Balkan Journal of Geometry and its Applications (BJGA)}, volume = {15}, year = {2010}, pages = {39-48}, zbl = {1228.53025}, language = {en}, url = {http://dml.mathdoc.fr/item/05904698} }
Deng, Shaoqiang; Wang, Xiaoyang. The . Balkan Journal of Geometry and its Applications (BJGA), Tome 15 (2010) pp. 39-48. http://gdmltest.u-ga.fr/item/05904698/