Chaînes de théories universelles
Complete and model-complete theories of monadic algebras
Concerning my note on universal homogeneous models.
Conservative extensions and the two cardinal theorem for stable theories
Consistency property and model existence theorem for second order negative languages with conjunctions and quantifications over sets of cardinality smaller than a strong limit cardinal of denumerable cofinality
Construction of an homology and a cohomology theory associated to a first order formula
Core structures for theories
Definability in structures of finite valency
Diagonal-like embeddings
End-extensions of countable structures and the induction schema
Equational logic and theories in sentential languages
Equationally compact algebras (I)
Equationally compact algebras II
Equationally compact algebras (III)
Errata for the paper "Equationally compact algebras II" (Fundamenta Mathematica 61 (1968), pp. 271-281)
Errata to the paper "Models of second order arithmetic with definable Skolem functions", Fundamenta Mathematicae 75 (1972), pp. 223-234
Forcing in a general setting
Forcing infinito generalizzato in teoria dei modelli
Homogeneity, universality and saturatedness of limit reduced powers (II)
Homogeneity, universality and saturatedness of limit reduced powers III