@article{PMF_1919_30_1_a6,
     author = {Sierpi\'nski, Wac{\l}aw},
     title = {O pewnej definicyi ca{\l}ki, r\'ownowa\.znej ca{\l}ce {Lebesgue}},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {163--173},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1919},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1919_30_1_a6/}
}