@article{10_4064_fm_62_1_61_45,
     author = {Gerald Ungar},
     title = {Light fiber maps},
     journal = {Fundamenta Mathematicae},
     pages = {61--45},
     publisher = {mathdoc},
     volume = {62},
     number = {1},
     year = {1968},
     doi = {10.4064/fm-62-1-61-45},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-62-1-61-45/}
}