@article{10_4064_am_1_3_206_211,
     author = {I. Ko\'znewska},
     title = {Pierwszy absolutny moment centralny dla rozk{\l}adu {P\'olyi}},
     journal = {Applicationes Mathematicae},
     pages = {206--211},
     publisher = {mathdoc},
     volume = {1},
     number = {3},
     year = {1953},
     doi = {10.4064/am-1-3-206-211},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-1-3-206-211/}
}