1. T. Aaron Gulliver, Masaaki Harada, Takuji Nishimura, and Patric R. J. Östergård, Near-extremal formally self-dual even codes of lengths 24 and 32, Des. Codes Cryptogr. 37 (2005), no. 3, 465–471.[MR]
  2. Masaaki Harada and Takuji Nishimura, An extremal singly even self-dual code of length 88, Adv. Math. Commun. 1 (2007), no. 2, 261–267.[MR]
  3. Masaaki Harada, Takuji Nishimura, and Radinka Yorgova, New extremal self-dual codes of length 66, Math. Balkanica (N.S.) 21 (2007), no. 1-2, 113–121.[MR]