The consistency of some intuitionistic and constructive principles with a set theory V. H. Hahanyan OriginalPaper Pages: 237 - 248
Strong completeness with respect to finite kripke models Wiesław Dziobiak OriginalPaper Pages: 249 - 252
A group-theoretical invariant for elementary equivalence and its role in representations of elementary classes Daniele Mundici OriginalPaper Pages: 253 - 267