@article{10_4064_fm_87_3_207_211,
     author = {Michael Starbird},
     title = {The {Borsuk} homotopy extension theorem without the binormality condition},
     journal = {Fundamenta Mathematicae},
     pages = {207--211},
     publisher = {mathdoc},
     volume = {87},
     number = {3},
     year = {1975},
     doi = {10.4064/fm-87-3-207-211},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-87-3-207-211/}
}