1. An Ehrenfeucht game for the multivariate quantifiers of Malitz and some applications;Badger;Pacific J. Math.,1977
2. Axioms for abstract model theory;Barwise;Ann. Math. Logic,1974
3. Stationary logic;Barwise;Ann. Math. Logic,1978
4. Maximality and interpolation in abstract logics (back-and-forth techniques);Caicedo,1978
5. Back-and-forth systems for arbitrary quantifiers;Caicedo,1980