@article{Hoffman:1960:MGD:1661212.1661219,
    Address = {Riverton, NJ, USA},
    Author = {Hoffman, A. J. and Singleton, R. R.},
    ISSN = {0018-8646},
    Journal = {IBM J. Res. Dev.},
    Month = {November},
    Number = {5},
    Pages = {497--504},
    Publisher = {IBM Corp.},
    Title = {On Moore graphs with diameters 2 and 3},
    URL = {http://dx.doi.org/10.1147/rd.45.0497},
    Volume = {4},
    Year = {1960},
    acmid = {1661219},
    bdsk-url-1 = {http://dx.doi.org/10.1147/rd.45.0497},
    date-added = {2012-12-18 16:37:03 +0000},
    date-modified = {2012-12-18 16:37:03 +0000},
    issue_date = {November 1960},
    numpages = {8},
    doi = {10.1147/rd.45.0497}
}

@article{Hoffman:1960:MGD:1661212.1661219, Address = {Riverton, NJ, USA}, Author = {Hoffman, A. J. and Singleton, R. R.}, ISSN = {0018-8646}, Journal = {IBM J. Res. Dev.}, Month = {November}, Number = {5}, Pages = {497--504}, Publisher = {IBM Corp.}, Title = {On Moore graphs with diameters 2 and 3}, URL = {http://dx.doi.org/10.1147/rd.45.0497}, Volume = {4}, Year = {1960}, acmid = {1661219}, bdsk-url-1 = {http://dx.doi.org/10.1147/rd.45.0497}, date-added = {2012-12-18 16:37:03 +0000}, date-modified = {2012-12-18 16:37:03 +0000}, issue_date = {November 1960}, numpages = {8}, doi = {10.1147/rd.45.0497} }