Dirk Hachenberger Harald Niederreiter Chaoping Xing Function-field codes. 201-211 2008 19 Appl. Algebra Eng. Commun. Comput. 3 http://dx.doi.org/10.1007/s00200-008-0071-3 db/journals/aaecc/aaecc19.html#HachenbergerNX08