@article{PMF_1902_13_1_a0,
     author = {Denizot, A.},
     title = {O pewnem zagadnieniu {Eulera} o wahadle},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {1--9},
     year = {1902},
     volume = {13},
     number = {1},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1902_13_1_a0/}
}