Homogeneous limit reduced powers. Leszek Pacholski — 1981 Archiv für mathematische Logik und Grundlagenforschung
On countably universal Boolean algebras compact classes of models Leszek Pacholski — 1973 Fundamenta Mathematicae
Homogeneity, universality and saturatedness of limit reduced powers III Leszek Pacholski — 1977 Fundamenta Mathematicae
On countably compact reduced product I Leszek Pacholski; Czesław Ryll-Nardzewski — 1970 Fundamenta Mathematicae