@article{EXMATH_1996_1996_1_a16,
     author = {Binz, E.},
     title = {Envueltas idealizadas constituidas por una multitud finita de part{\'\i}culas materiales.},
     journal = {Extracta mathematicae},
     pages = {1-16},
     year = {1996},
     volume = {11},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1996_1996_1_a16/}
}