@article{MT_1992_22_a3,
     author = {V. L. Vaskevich},
     title = {Numerical analysis of the energy zone structure of a crystal with a poly-atomic elementary cell},
     journal = {Matemati\v{c}eskie trudy},
     pages = {55--91},
     publisher = {mathdoc},
     volume = {22},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_1992_22_a3/}
}