@article{PMF_1914_25_1_a0,
     author = {Danysz, Jan},
     title = {O promieniach \ensuremath{\beta} pierwiastk\'ow promieniotw\'orczych z grupy radu},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {1--10},
     publisher = {mathdoc},
     volume = {25},
     number = {1},
     year = {1914},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1914_25_1_a0/}
}