A New Combination of Input and Unit Deductions for Horn Sentences. - Susumu Yamasaki; Mikio Yoshida; Shuji Doshita; Mikito Hirata (Inf. Process. Lett., 1984)

Learning Mechanism in Machine Translation System "PIVOT". - Mitsugu Miura; Mikito Hirata; Nami Hoshino (COLING, 1992)