@article{10_14708_wm_v3i3_2581,
     author = {Marek Burnat},
     title = {Miros{\l}aw {Krzy\.za\'nski,} {R\'ownania} r\'o\.zniczkowe cz\k{a}stkowe rz\k{e}du drugiego, cze\'s\'c {I}},
     journal = {Wiadomo\'sci Matematyczne},
     pages = { 310--311},
     publisher = {mathdoc},
     volume = {3},
     number = {3},
     year = {1960},
     doi = {10.14708/wm.v3i3.2581},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/wm.v3i3.2581/}
}