A 40-dimensional extremal Type II lattice with no 4-frames. - Norifumi Ojiro (Discret. Math., 2019)

Construction of reversible integer codes with large moduli via Chinese remainder theorem. - Norifumi Ojiro; Hajime Matsui (ISITA, 2022)

An efficient algorithm for constructing reversible quasi-cyclic codes via Chinese remainder theorem. - Norifumi Ojiro; Kakeru Kaneko; Hajime Matsui (Finite Fields Their Appl., 2023)

Minimum weights of codes over integer residue rings generated by Kronecker products of certain integer matrices. - Norifumi Ojiro; Hajime Matsui (Adv. Math. Commun., 2025)