@article{ERAAMS_2005_11_a5,
     author = {Kassabov, Martin},
     title = {Symmetric groups and expanders},
     journal = {Electronic research announcements of the American Mathematical Society},
     pages = {47--56},
     publisher = {mathdoc},
     volume = {11},
     year = {2005},
     doi = {10.1090/S1079-6762-05-00146-0},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S1079-6762-05-00146-0/}
}