INTEGRAL MANIFOLDS OF PERTURBED DIFFERENTIAL SYSTEMS

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

[12] LILLO J, 1960, PROC NAT ACAD SCI, V49, P247

[13] PERTURBATIONS OF NONLINEAR SYSTEMS [J]. ACTA MATHEMATICA, 1960, 103 (1-2) : 123 - 138

[14] LILLO JC, 1960, MATH Z, V73, P45

[15] LYAPUNOV AM, 1947, ANN MATH STUDIES, V17

[16] MARCUS MD, 1956, ANN MATH STUDIES, V36, P277

[17] MARCUS MD, 1956, ANN MATH STUDIES, V36, P261

[18] MITROPOLSKII YA, 1957, UKR MAT ZH, V9, P296

[19] MITROPOLSKII YA, 1958, UKR MAT ZH, V10, P389

[20] Mitropolsky Yu. A., 1958, UKR MAT ZH, V10, P270

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

[12] LILLO J, 1960, PROC NAT ACAD SCI, V49, P247

[13] PERTURBATIONS OF NONLINEAR SYSTEMS [J]. ACTA MATHEMATICA, 1960, 103 (1-2) : 123 - 138

[14] LILLO JC, 1960, MATH Z, V73, P45

[15] LYAPUNOV AM, 1947, ANN MATH STUDIES, V17

[16] MARCUS MD, 1956, ANN MATH STUDIES, V36, P277

[17] MARCUS MD, 1956, ANN MATH STUDIES, V36, P261

[18] MITROPOLSKII YA, 1957, UKR MAT ZH, V9, P296

[19] MITROPOLSKII YA, 1958, UKR MAT ZH, V10, P389

[20] Mitropolsky Yu. A., 1958, UKR MAT ZH, V10, P270