@article{10_14708_wm_v11i1_2124,
     author = {C. Bessaga},
     title = {B. {Sikorski,} {Rachunek} r\'o\.zniczkowy i ca{\l}kowy. {Funkcje} wielu zmiennych},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 157--160},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {1969},
     doi = {10.14708/wm.v11i1.2124},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v11i1.2124/}
}