@article{10_4064_fm_77_3_195_210,
     author = {J. Quigley},
     title = {An exact sequence from the nth to the (n-1)-st fundamental group},
     journal = {Fundamenta Mathematicae},
     pages = {195--210},
     publisher = {mathdoc},
     volume = {77},
     number = {3},
     year = {1972},
     doi = {10.4064/fm-77-3-195-210},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-77-3-195-210/}
}