@article{IM_1981__65_142849,
     author = {Takuo Fukuda},
     title = {Local {Topological} {Properties} of {Differentiable} {Mappings.} {I.}},
     journal = {Inventiones mathematicae},
     pages = {227--250},
     publisher = {mathdoc},
     volume = {65},
     year = {1981},
     zbl = {0499.58008},
     url = {http://geodesic.mathdoc.fr/item/IM_1981__65_142849/}
}