@article{10_4064_sm_59_2_155_175,
     author = {T. Le\.za\'nski},
     title = {Sur les \'equations du type \ensuremath{\psi}(x,h)=0 {(I)}},
     journal = {Studia Mathematica},
     pages = {155--175},
     publisher = {mathdoc},
     volume = {59},
     number = {2},
     year = {1976},
     doi = {10.4064/sm-59-2-155-175},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm-59-2-155-175/}
}