@article{10_4064_fm_111_1_77_93,
     author = {Barry Graham},
     title = {On contractible fans},
     journal = {Fundamenta Mathematicae},
     pages = {77--93},
     publisher = {mathdoc},
     volume = {111},
     number = {1},
     year = {1981},
     doi = {10.4064/fm-111-1-77-93},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-111-1-77-93/}
}