@article{PMF_1925-1926_34_1_a4,
     author = {Rajchman, Aleksander},
     title = {O pierwszej pochodnej uog\'olnionej},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {63--65},
     publisher = {mathdoc},
     volume = {34},
     number = {1},
     year = {1925-1926},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1925-1926_34_1_a4/}
}