@article{10_4153_CJM_1991_056_x,
     author = {Guennoun, Zine E. A.},
     title = {Existence de {Solutions} au {Sens} de {Carath\'eodory} {Pour} le {Probl\`eme} de {Neumann} y'' = f(t, y, y')},
     journal = {Canadian journal of mathematics},
     pages = {998--1009},
     year = {1991},
     volume = {43},
     number = {5},
     doi = {10.4153/CJM-1991-056-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1991-056-x/}
}