@article{PMF_1909_20_1_a0,
     author = {Hoborski, A.},
     title = {Ca{\l}kowanie r\'ownania r\'o\.zniczkowego o cz\k{a}stkowych pochodnych: {\ensuremath{\partial}V/\ensuremath{\partial}t} = {\ensuremath{\partial}{\texttwosuperior}V/\ensuremath{\partial}x{\texttwosuperior}} + {\ensuremath{\partial}{\texttwosuperior}V/\ensuremath{\partial}y{\texttwosuperior}}},
     journal = {Prace Matematyczno-Fizyczne},
     pages = {1--143},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {1909},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/item/PMF_1909_20_1_a0/}
}