@article{EJDE_2002__2002__a85,
     author = {Tarama,  Shigeo},
     title = {On the {Goursat} problem for a second order equation},
     journal = {Electronic journal of differential equations},
     year = {2002},
     volume = {2002},
     zbl = {1056.35108},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2002__2002__a85/}
}