@article{RM_2009_64_5_a6,
     author = {Yu. M. Ustinovskii},
     title = {Doubling operation for polytopes and torus actions},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {952--954},
     publisher = {mathdoc},
     volume = {64},
     number = {5},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2009_64_5_a6/}
}