@article{MAN_1965__159_182682,
     author = {E.M. ALFSEN},
     title = {Some {Covering} {Theorems} of {Vitali} {Type.}},
     journal = {Mathematische Annalen},
     pages = {203--216},
     publisher = {mathdoc},
     volume = {159},
     year = {1965},
     zbl = {0145.05401},
     url = {http://geodesic.mathdoc.fr/item/MAN_1965__159_182682/}
}