@article{PMF_1898_9_1_a2,
     author = {Podlaski, L.},
     title = {O t{\l}umieniu si\k{e} drga\'n w o\'srodkach doskonale spr\k{e}\.zystych},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {46--60},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {1898},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1898_9_1_a2/}
}