Topology · 1973 · 22 citations · 11 references
Natural SciencesVisualizationGeometryGroup TheoryInvariant ManifoldsLow-dimensional GeometryLow-dimensional TopologySymplectic GeometryThree-dimensional GeometryGeometric Structures On Manifolds
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P. M. Cohn, Wilhelm Magnus, A. Karrass et al. · American Mathematical Monthly · 1967 · 1.3K citations
Mose Newman · Journal of the Franklin Institute · 1967 · 654 citations
On Dehn's Lemma and the Asphericity of Knots
C. D. Papakyriakopoulos · Annals of Mathematics · 1957 · 463 citations