@article{05887051, title = {Conditions for the }, journal = {Sibirskij Matematicheskij Zhurnal}, volume = {50}, year = {2009}, pages = {1333-1347}, zbl = {1224.32008}, language = {en}, url = {http://dml.mathdoc.fr/item/05887051} }
Kytmanov, A.M.; Myslivets, S.G. Conditions for the . Sibirskij Matematicheskij Zhurnal, Tome 50 (2009) pp. 1333-1347. http://gdmltest.u-ga.fr/item/05887051/