@article{AL_2012_51_2_a5,
     author = {V. D. Mazurov and W. J. Shi},
     title = {A criterion of unrecognizability by spectrum for finite groups},
     journal = {Algebra i logika},
     pages = {239--243},
     publisher = {mathdoc},
     volume = {51},
     number = {2},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2012_51_2_a5/}
}