@article{PMF_1897_8_1_a4,
     author = {Rudzki, T.},
     title = {O ca{\l}kowaniu r\'owna\'n r\'o\.zniczkowych cz\k{a}stkowych wed{\l}ug {Amp\`ere'a} i {Darboux}},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {99--128},
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {1897},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1897_8_1_a4/}
}