@article{PM_1996_1996_1_a6,
     author = {Szafranski, Zdzislaw and Szmanda, Blazej},
     title = {Oscilaci\'on de soluciones de algunas ecuaciones en diferencias no lineales.},
     journal = {Publicacions matem\`atiques},
     pages = {127-133},
     publisher = {mathdoc},
     volume = {40},
     number = {1},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_1996_1996_1_a6/}
}