@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/