[1]中国石油大学(华东)石油工程学院,青岛266580 [2]Department of Mathematics, Texas A & M University, College Station 77843, USA;
[1]中国石油大学(华东)石油工程学院,青岛266580 [2]Department of Mathematics, Texas A & M University, College Station 77843, USA;
[1]中国石油大学(华东)石油工程学院,青岛266580 [2]Department of Mathematics, Texas A & M University, College Station 77843, USA;