“旋转向量场和一类平面二次系统极限环大范围性态”一文的注记
Crossref DOI link: https://doi.org/10.1360/csb1981-26-20-1277-x
Published Online: 1981-10-28
Published Print: 1981-10-01
Update policy: https://doi.org/10.1360/scp-crossmark-policy-page
任, 永泰
