Masaaki Harada Masaaki Kitazume Akihiro Munemasa Boris Venkov On some self-dual codes and unimodular lattices in dimension 48. 543-557 2005 26 Eur. J. Comb. 5 http://dx.doi.org/10.1016/j.ejc.2004.06.013 db/journals/ejc/ejc26.html#HaradaKMV05