@article{MS2_1970__26_166120,
     author = {Johan L. Dupont},
     title = {On {Homotopy} {Invariance} of the {Tangent} {Bundle} {I.}},
     journal = {Mathematica Scandinavica},
     pages = {5--13},
     publisher = {mathdoc},
     volume = {26},
     year = {1970},
     zbl = {0191.54002},
     url = {http://geodesic.mathdoc.fr/item/MS2_1970__26_166120/}
}