Curriculum vitae of A. Mostowski -- Two remarks on the models of Morse' set theory -- A remark on powers of singular cardinals -- Uncountable standard models of ZFC+V?L -- Changing cofinality of X 2 -- Inductive definitions: Positive and monotone -- An alternative to Martin's axiom -- Elementary extensions of ?-models of A2 with fixed height -- Das Problem von Souslin für geordnete algebraische Strukturen -- A cumulative system of fuzzy sets -- Non-standard satisfaction classes -- Ehrenfeucht games for generalized quantifiers -- Dimension and totally transcendental theories of rank 2 -- Measure and categoricity in ?-recursion -- Urelements and extendability -- On limit reduced powers, saturateness and universality -- Extensions of models for ZFC to models for ZF+V=HOD with applications -- Decision problems for generalized quantifiers-A survey -- The alternative set theory -- Some cases of Künig's lemma -- Categoricity relative to ordinals for models of set theory and the nonabsoluteness of L -- The universality of boolean algebras with the Härtig quantifier -- Von Neumann's hierarchy and definable reals -- Generic extension of admissible sets -- Some remarks on observational model-theoretic languages.