@article{PMF_1894_5_1_a9,
     author = {Biernacki, Wiktor},
     title = {Badania wst\k{e}pne nad oporem iskry},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {85--102},
     year = {1894},
     volume = {5},
     number = {1},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1894_5_1_a9/}
}