@article{MSC_1996_1996_1_a5,
     author = {D'Agostino, Marcello and Gabbay, Dov M. and Russo, Alessandra},
     title = {Marcos de informaci\'on, sistemas de implicaci\'on y modalidades.},
     journal = {Mathware & soft computing},
     pages = {67-82},
     publisher = {mathdoc},
     volume = {3},
     number = {1-2},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MSC_1996_1996_1_a5/}
}