@article{VMUMM_1986_5_a1,
     author = {W. G. Gaydalovich and D. D. Sokolov},
     title = {About convex polyhedra with indefinite metric},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {5--11},
     publisher = {mathdoc},
     number = {5},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1986_5_a1/}
}