PERIODIC SOLUTIONS OF A PERTURBED AUTONOMOUS SYSTEM

[1] Coddington E. A., 1955, THEORY ORDINARY DIFF

[2] KAC AM, 1955, PRIKL MAT MEKH, V19, P13

[3] Transformation theory of non-linear differential equations of the second order [J]. ANNALS OF MATHEMATICS, 1944, 45 : 723 - 737

[4] SMALL PERIODIC PERTURBATIONS OF AN AUTONOMOUS SYSTEM WITH A STABLE ORBIT [J]. ANNALS OF MATHEMATICS, 1950, 52 (03) : 727 - 738

[5] LOUD WS, 1959, MEMOIRS AM MATH SOC, V31

[1] Coddington E. A., 1955, THEORY ORDINARY DIFF

[2] KAC AM, 1955, PRIKL MAT MEKH, V19, P13

[3] Transformation theory of non-linear differential equations of the second order [J]. ANNALS OF MATHEMATICS, 1944, 45 : 723 - 737

[4] SMALL PERIODIC PERTURBATIONS OF AN AUTONOMOUS SYSTEM WITH A STABLE ORBIT [J]. ANNALS OF MATHEMATICS, 1950, 52 (03) : 727 - 738

[5] LOUD WS, 1959, MEMOIRS AM MATH SOC, V31