ON STRUCTURAL STABILITY

[1] ALEXANDER JW, 1923, P NAT ACAD SCI US, V9

[2] Alexandroff P., 1935, TOPOLOGIE, P3

[3] ANDRONOV A, 1937, COMP REND ACC SC USS, V14

[4] BENDIXON I, 1901, ACTA MATH, V24

[5] CODDINGTON EA, 1955, ORDINARY DIFFERENTIA

[6] DeBaggis H.F., 1952, CONTRIBUTIONS THEORY, V2, P37

[7] DUFF GFD, 1953, ANN MATH, V57

[8] DULAC H, 1923, B SOC MATH FRANCE, V51

[9] Kerekjarto B., 1923, VORLESUNGEN TOPOLOGI

[10] LANDIS EM, 1957, DOKL AKAD NAUK SSSR, V113

[1] ALEXANDER JW, 1923, P NAT ACAD SCI US, V9

[2] Alexandroff P., 1935, TOPOLOGIE, P3

[3] ANDRONOV A, 1937, COMP REND ACC SC USS, V14

[4] BENDIXON I, 1901, ACTA MATH, V24

[5] CODDINGTON EA, 1955, ORDINARY DIFFERENTIA

[6] DeBaggis H.F., 1952, CONTRIBUTIONS THEORY, V2, P37

[7] DUFF GFD, 1953, ANN MATH, V57

[8] DULAC H, 1923, B SOC MATH FRANCE, V51

[9] Kerekjarto B., 1923, VORLESUNGEN TOPOLOGI

[10] LANDIS EM, 1957, DOKL AKAD NAUK SSSR, V113