1. G. Genzen, Untersuchungen �ber das logische Schlissen,Mathematische Zeitschrift 39 (1934/35) pp. 176?210, 405 ? 431.
2. T. Hosoi On the axiomatic method and the algebraic method for dealing with propositional logics,Journal of Faculty of Science, University of Tokyo, Sec. I, 14 (1967), pp. 131?169.
3. T. Hosoi On intermediate logics I, Journal of Faculty of Science, University of Tokyo, Sec. I, 14 (1967), pp. 293?312.
4. T. Hosoi Pseudo two-valuded evaluation method for intermediate logics,Studia Logica 45 (1986), pp. 3?8.
5. T. Hosoi andK. Sasaki,Finite Logics and the simple substitution property,Bulletin of the Section of Logic 19 (1990), pp. 74?78.