@article{10_4064_ap_19_3_235_247,
     author = {W. Pawelski},
     title = {Sur les in\'egalit\'es mixtes entre les int\'egrales de l'\'equation aux d\'eriv\'ees partielles $z_x = f(x, y, z, z_y)$},
     journal = {Annales Polonici Mathematici},
     pages = {235--247},
     publisher = {mathdoc},
     volume = {19},
     number = {3},
     year = {1967},
     doi = {10.4064/ap-19-3-235-247},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-19-3-235-247/}
}