A Construction Method for m-ary Unidirectional Error Control Codes. - Tae Nam Ahn; Kohichi Sakaniwa; T. R. N. Rao (AAECC, 1990)

A Note on t-Unidirectional Error Correcting and d(d>=t)-Unidirectional Error Detecting (t-UEC and d-UED) Codes. - Kohichi Sakaniwa; Tae Nam Ahn; T. R. N. Rao (IEEE Trans. Computers, 1991)