Affiliation: | 1.Omsk Branch of Sobolev Institute of Mathematics, Siberian Branch,Russian Academy of Sciences,Omsk,Russia;2.Schaefer School of Engineering and Science, Department of Mathematical Sciences,Stevens Institute of Technology, Castle Point on Hudson,Hoboken,USA;3.Omsk Branch of Sobolev Institute of Mathematics, Siberian Branch,Russian Academy of Sciences,Omsk,Russia |