@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}, publisher = {mathdoc}, volume = {11}, number = {1}, year = {1996}, language = {en}, url = {http://geodesic.mathdoc.fr/item/EXMATH_1996_1996_1_a16/} }