1. That all normal extensions of S4.3 have f.m.p.;Bull;Z. Math. Log. Grund.,1966
2. Algebraic study of tense logics with linear time;Bull;J. Symbolic Logic,1968
3. A completeness theorem for tense logic;Cocchiarella;J. Symbolic Logic,1966
4. Semantics for minimal logic;Gabbay;Abstract-Notices Am. Math. Soc.,1969