@article{MZ_1964__84_170241,
     author = {Donald W. Kahn},
     title = {The group of homotopy equivalences.},
     journal = {Mathematische Zeitschrift},
     pages = {1--8},
     publisher = {mathdoc},
     volume = {84},
     year = {1964},
     zbl = {0129.38804},
     url = {http://geodesic.mathdoc.fr/item/MZ_1964__84_170241/}
}