An extremal doubly even self-dual code of length 112. Harada, Masaaki — 2008 The Electronic Journal of Combinatorics [electronic only]
Mutually disjoint Steiner systems S (5, 8, 24) and 5-(24,12,48) designs. Araya, Makoto; Harada, Masaaki — 2010 The Electronic Journal of Combinatorics [electronic only]
Classification of generalized Hadamard matrices H ( 6 , 3 ) and quaternary Hermitian self-dual codes of length 18. Harada, Masaaki; Lam, Clement; Munemasa, Akihiro; Tonchev, Vladimir D. — 2010 The Electronic Journal of Combinatorics [electronic only]