@article{ADM_2003_3_a7,
     author = {Vasyl A. Ustimenko},
     title = {On a~group theoretical construction of expanding graphs},
     journal = {Algebra and discrete mathematics},
     pages = {102--109},
     year = {2003},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2003_3_a7/}
}