TOPOLOGY OF LEVEL CURVES OF HARMONIC FUNCTIONS

[1] The structure of a curve family on a surface in the neighborhood of an isolated singularity [J]. AMERICAN JOURNAL OF MATHEMATICS, 1942, 64 : 1 - 35

[2] Kaplan W., 1940, DUKE MATH J, V7, P154

[3] Kaplan W., 1940, DUKE MATH J, V8, P11

[4] KAPLAN W, 1941, ANN ARBOR, P299

[5] NEVANLINNA R, 1936, EINDEUTIGE ANAL FUNK

[6] Stoilow S, 1938, LECONS PRINCIPES TOP

[7] Regular families of curves [J]. ANNALS OF MATHEMATICS, 1933, 34 : 244 - 270

[1] The structure of a curve family on a surface in the neighborhood of an isolated singularity [J]. AMERICAN JOURNAL OF MATHEMATICS, 1942, 64 : 1 - 35

[2] Kaplan W., 1940, DUKE MATH J, V7, P154

[3] Kaplan W., 1940, DUKE MATH J, V8, P11

[4] KAPLAN W, 1941, ANN ARBOR, P299

[5] NEVANLINNA R, 1936, EINDEUTIGE ANAL FUNK

[6] Stoilow S, 1938, LECONS PRINCIPES TOP

[7] Regular families of curves [J]. ANNALS OF MATHEMATICS, 1933, 34 : 244 - 270