@article{10_4064_fm_46_3_285_303,
     author = {D. Bourgin},
     title = {Deformation and mapping theorems},
     journal = {Fundamenta Mathematicae},
     pages = {285--303},
     publisher = {mathdoc},
     volume = {46},
     number = {3},
     year = {1958},
     doi = {10.4064/fm-46-3-285-303},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-46-3-285-303/}
}