@article{10_4064_ap5_3_303_317,
     author = {I. Barbǎlat},
     title = {Applications du principe topologique de {T.} {Wa\.zewski} aux \'equations diff\'erentielles du second ordre},
     journal = {Annales Polonici Mathematici},
     pages = {303--317},
     publisher = {mathdoc},
     volume = {5},
     number = {3},
     year = {1958},
     doi = {10.4064/ap5-3-303-317},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap5-3-303-317/}
}