@article{MAN_1938__115_159982,
     author = {A.S. Besicovitch},
     title = {On a problem concerning {Lebesgue} {Integrals}},
     journal = {Mathematische Annalen},
     pages = {613--618},
     publisher = {mathdoc},
     volume = {115},
     year = {1938},
     zbl = {0018.24902},
     url = {http://geodesic.mathdoc.fr/item/MAN_1938__115_159982/}
}