中国科学院数学与系统科学研究院期刊网
稳定性理论中微分方程与微分差分方程的等价性问题
秦元勋
ON THE EQUIVALENCE PROBLEM OF DIFFERENTIAL EQUATIONS AND DIFFERENCE-DIFFERENTIAL EQUATIONS IN THE THEORY OF STABILITY
数学学报 . 1958, (4): 457 -472 .  DOI: 10.12386/A1958sxxb0042