@article{CMJ_2001__51_4_a11,
     author = {Winters, Steven J.},
     title = {Strong asymmetric digraphs with prescribed interior and annulus},
     journal = {Czechoslovak Mathematical Journal},
     pages = {831--846},
     publisher = {mathdoc},
     volume = {51},
     number = {4},
     year = {2001},
     mrnumber = {1864045},
     zbl = {0995.05064},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2001__51_4_a11/}
}