@article{IM_1979__54_142677,
     author = {Lai-Sang Young},
     title = {A {Closing} {Lemma} on the {Interval.}},
     journal = {Inventiones mathematicae},
     pages = {179--188},
     publisher = {mathdoc},
     volume = {54},
     year = {1979},
     zbl = {0425.58016},
     url = {http://geodesic.mathdoc.fr/item/IM_1979__54_142677/}
}