@article{AL_2013_52_6_a6,
     author = {V. A. Churkin},
     title = {Crystallographic groups with two lattices and metric {Lie} algebras},
     journal = {Algebra i logika},
     pages = {772--777},
     publisher = {mathdoc},
     volume = {52},
     number = {6},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2013_52_6_a6/}
}