Wensong Chu Charles J. Colbourn Peter Dukes Constructions for Permutation Codes in Powerline Communications. 51-64 2004 32 Des. Codes Cryptography 1-3 http://dx.doi.org/10.1023/B:DESI.0000029212.52214.71 db/journals/dcc/dcc32.html#ChuCD04