@article{MAN_1996__306_3_165451,
     author = {Gerardo Hernandez},
     title = {On hyper f-structures.},
     journal = {Mathematische Annalen},
     pages = {205--230},
     publisher = {mathdoc},
     volume = {306},
     number = {3},
     year = {1996},
     zbl = {0859.53019},
     url = {http://geodesic.mathdoc.fr/item/MAN_1996__306_3_165451/}
}