@article{JRAM_1976__0286_0287_151783,
     author = {P.A. Leonard and B.C. Mortimer},
     title = {The eleventh power character of 2.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {213--222},
     publisher = {mathdoc},
     volume = {0286_0287},
     year = {1976},
     zbl = {0332.10003},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1976__0286_0287_151783/}
}