The classes of topological diagrams of a self-contained plane

[1] ALEXANDER JW, 1923, P NAT ACAD SCI, V9, P408

[2] Baer R, 1928, J REINE ANGEW MATH, V159, P101

[3] BRODEL W, 1935, BER VERHANDL SACHS A, V87, P85

[4] Hopf H, 1931, J REINE ANGEW MATH, V165, P225

[5] Smallest occulation in a type of surface mapping. [J]. MATHEMATISCHE ANNALEN, 1930, 103 : 347 - 358

[6] Examination of the topology of closed two sided areas [J]. ACTA MATHEMATICA, 1927, 50 (01) : 189 - 358

[7] NIELSEN J, 1921, MATH ANN, V82, P83

[8] NIELSEN J, 1927, ACTA MATH, V50, P266

[9] NIELSEN J, 1935, ACTA LITT SCI SZEGED, V7, P200

[10] SEIFERT H, 1934, LEHRBUCH TOPOLOGIE, P113

[1] ALEXANDER JW, 1923, P NAT ACAD SCI, V9, P408

[2] Baer R, 1928, J REINE ANGEW MATH, V159, P101

[3] BRODEL W, 1935, BER VERHANDL SACHS A, V87, P85

[4] Hopf H, 1931, J REINE ANGEW MATH, V165, P225

[5] Smallest occulation in a type of surface mapping. [J]. MATHEMATISCHE ANNALEN, 1930, 103 : 347 - 358

[6] Examination of the topology of closed two sided areas [J]. ACTA MATHEMATICA, 1927, 50 (01) : 189 - 358

[7] NIELSEN J, 1921, MATH ANN, V82, P83

[8] NIELSEN J, 1927, ACTA MATH, V50, P266

[9] NIELSEN J, 1935, ACTA LITT SCI SZEGED, V7, P200

[10] SEIFERT H, 1934, LEHRBUCH TOPOLOGIE, P113