@article{CLTM_1984_1984_1_a14,
     author = {Berm\'udez, A. and Durany, J. and Saguez, C.},
     title = {Un teorema de existencia para una ecuaci\'on de evoluci\'on implicita no lineal.},
     journal = {Collectanea mathematica},
     pages = {19-34},
     publisher = {mathdoc},
     volume = {35},
     number = {1},
     year = {1984},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1984_1984_1_a14/}
}