 On Manifolds Homeomorphic to the 7-Sphere by John Milnor

By John Milnor.

Verified locator: Annals of Mathematics 64(2), September 1956, 399–405. Introduction, section 3 and Theorem 3, printed p.403; S^3 bundles over S^4 with exotic smooth structures. Primary scan also at homepages.math.uic.edu/~kauffman/Milnor.pdf ; theorem statement verified in indexed original scan.