@article{DAN_1990_312_6_a10,
     author = {A. V. Sychev},
     title = {Quasiconformity coefficients for a pair of dihedral wedges and cones},
     journal = {Doklady Akademii Nauk},
     pages = {1328--1329},
     year = {1990},
     volume = {312},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_312_6_a10/}
}