@article{10_14708_wm_v22i01_3656,
     author = {J. Kijowski},
     title = {O relacjach symplektycznych i r\'ownaniach r\'o\.zniczkowych cz\k{a}stkowych},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 17--29},
     publisher = {mathdoc},
     volume = {22},
     number = {01},
     year = {1979},
     doi = {10.14708/wm.v22i01.3656},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v22i01.3656/}
}