G-groupoids, crossed modules and the fundamental groupoid of a topological group

Combinatorial homotopy. I

J. H. C. Whitehead · Bulletin of the American Mathematical Society · 1949 · 848 citations · Full text

Natural Sciences, Mathematics, Combinatorics +9

Construction of Universal Bundles, I

John Milnor · Annals of Mathematics · 1956 · 535 citations

Natural Sciences, Secondary Education, Topology +9

Combinatorial homotopy. II

J. H. C. Whitehead · Bulletin of the American Mathematical Society · 1949 · 399 citations · Full text

On the 3-Type of a Complex

Saunders MacLane, J. H. C. Whitehead · Proceedings of the National Academy of Sciences · 1950 · 206 citations · Full text

Natural Sciences, Mathematics, Complex Systems +13

Elements of Modern Topology.

John D. Baum, Ronald Brown · American Mathematical Monthly · 1969 · 176 citations

Natural Sciences, Computer Science, Mathematics +10