Construction of hadamard matrices of order 28. - Hiroshi Kimura; Hiroyuki Ohmori (Graphs Comb., 1986)

Classification of weighing matrices of order 13 and weight 9. - Hiroyuki Ohmori (Discret. Math., 1993)

Construction of Weighing Matrices (17, 9) Having the Intersection Number 8. - Hiroyuki Ohmori; Takashi Miyamoto (Des. Codes Cryptogr., 1998)