@article{10_4064_ap_27_3_257_264,
     author = {A. Adamus-Kulczycka},
     title = {Global existence for non-linear partial differential equations of the first order},
     journal = {Annales Polonici Mathematici},
     pages = {257--264},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {1972},
     doi = {10.4064/ap-27-3-257-264},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-27-3-257-264/}
}