@article{MAN_1977__230_163039,
     author = {Leif Mejlbro and Flemming Topsoe},
     title = {A {Precise} {Vitali} {Theorem} for {Lebesgue} {Measure.}},
     journal = {Mathematische Annalen},
     pages = {183--194},
     publisher = {mathdoc},
     volume = {230},
     year = {1977},
     zbl = {0364.28003},
     url = {http://geodesic.mathdoc.fr/item/MAN_1977__230_163039/}
}