@article{CMH_1968__43_139365,
     author = {T. Ganea},
     title = {On the {Homotopy} {Suspension.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {225--234},
     year = {1968},
     volume = {43},
     zbl = {0165.56603},
     url = {http://geodesic.mathdoc.fr/item/CMH_1968__43_139365/}
}