Zihui Liu Wende Chen Yuan Luo The relative generalized Hamming weight of linear <i>q</i> -ary codes and their subcodes. 111-123 2008 48 Des. Codes Cryptography 2 http://dx.doi.org/10.1007/s10623-008-9170-1 db/journals/dcc/dcc48.html#LiuCL08