@article{SEMR_2007_4_a9,
     author = {D. V. Lytkina and A. A. Kuznetsov},
     title = {Recognizability by spectrum of the group $L_2(7)$},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {136--140},
     year = {2007},
     volume = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2007_4_a9/}
}