中国科学院数学与系统科学研究院期刊网
THE FORMULA OF LIAPOUNOFF FUNCTION OF SYSTEM OF LINEAR DIFFERENTIAL EQUATIONS WITH CONSTANT COEFFICIENTS
蔡燧林
Acta Mathematica Sinica, Chinese Series . 1959, (4): 455 -467 .  DOI: 10.12386/A1959sxxb0041