@article{10_14708_cm_v9i2_5541,
     author = {M. Kalecki},
     title = {Twierdzenie {\cyro} sumach typu \(\sum \sigma {(N/r)\)} i jego zastosowanie},
     journal = {Commentationes Mathematicae},
     pages = { 129--135},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {1965},
     doi = {10.14708/cm.v9i2.5541},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v9i2.5541/}
}