@article{QUE_1987_1987_1_a5,
     author = {Fern\'andez Camacho, Mar{\'\i}a In\'es},
     title = {Tama\~no medio de \'arboles simplificados.},
     journal = {Q\"uestii\'o},
     pages = {93-116},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {1987},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/QUE_1987_1987_1_a5/}
}