@article{10_4064_fm_90_1_99_103,
     author = {David Sprows},
     title = {Homeotopy groups of compact 2-manifolds},
     journal = {Fundamenta Mathematicae},
     pages = {99--103},
     publisher = {mathdoc},
     volume = {90},
     number = {1},
     year = {1975},
     doi = {10.4064/fm-90-1-99-103},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-90-1-99-103/}
}