@article{DAN_1990_314_3_a23,
     author = {V. B. Yakovlev},
     title = {Morphology of mirror-prism systems},
     journal = {Doklady Akademii Nauk},
     pages = {613--617},
     publisher = {mathdoc},
     volume = {314},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1990_314_3_a23/}
}