O175
张谋.关于微分方程X=ψ(y)-F(x,y)Y=h(y)-g(x)极限环的存在性[J].土木与环境工程学报(中英文),1994,16(1). Zhang Mou. ON THE EXISTENCE OF LIMIT CYCLES OF A CLASS NONLINEAR EQUATION[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,1994,16(1).10.11835/j. issn.1674-4764.1994.01.003
复制