@article{05875530, title = {New characterization of }, journal = {Sibirskij Matematicheskij Zhurnal}, volume = {50}, year = {2009}, pages = {669-679}, zbl = {1212.20008}, language = {en}, url = {http://dml.mathdoc.fr/item/05875530} }
Zhang, Liangcai; Shi, Wujie. New characterization of . Sibirskij Matematicheskij Zhurnal, Tome 50 (2009) pp. 669-679. http://gdmltest.u-ga.fr/item/05875530/