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@article{CMH_1961__36_139231, author = {Morris W. Hirsch}, title = {On {Combinatorial} {Submanifolds} of {Differentiable} {Manifolds.}}, journal = {Commentarii mathematici Helvetici}, pages = {103--111}, publisher = {mathdoc}, volume = {36}, year = {1961}, zbl = {0101.16101}, url = {http://geodesic.mathdoc.fr/item/CMH_1961__36_139231/} }
Morris W. Hirsch. On Combinatorial Submanifolds of Differentiable Manifolds.. Commentarii mathematici Helvetici, Tome 36 (1961), pp. 103-111. http://geodesic.mathdoc.fr/item/CMH_1961__36_139231/