1. A reduction of the Schoenflies extension problem;Morse, Marston;Bull. Amer. Math. Soc.,1960
2. A manifold which does not admit any differentiable structure;Kervaire, Michel A.;Comment. Math. Helv.,1960
3. 3. J. Milnor, On the relationship between differentiable manifolds and combinatorial manifolds, Princeton University, Mimeographed, 1956.
4. A reduction of the Schoenflies extension problem;Morse, Marston;Bull. Amer. Math. Soc.,1960
5. The smoothing of combinatorial 𝑛-manifolds in (𝑛+1)-space;Noguchi, Hiroshi;Ann. of Math. (2),1960