@article{10_4064_ap_3_2_183_188,
     author = {A. Pli\'s},
     title = {A method of determining the existence domain for solutions of partial differential equations of the first order},
     journal = {Annales Polonici Mathematici},
     pages = {183--188},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {1956},
     doi = {10.4064/ap-3-2-183-188},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-3-2-183-188/}
}