@article{PMF_1922_32_1_a4,
     author = {Plamitzer, Antoni},
     title = {O inwolucyjnych p\k{e}kach krzywych p{\l}askich.},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {69--79},
     year = {1922},
     volume = {32},
     number = {1},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1922_32_1_a4/}
}