@article{CMUC_1989__30_1_a25,
     author = {Kratochv{\'\i}l, Jan},
     title = {Perfect codes in graphs and their {Cartesian} powers {[Abstract} of thesis]},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {193--194},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1989},
     zbl = {0709.94632},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1989__30_1_a25/}
}