A representation of the category of algebras over different monads by the category of algebras over one suitable monad in a category of pointed monads Józef Słomiński — 1980 Colloquium Mathematicae
On the greatest congruence relation contained in an equivalence relation and its applications to the algebraic theory of machines Józef Słomiński — 1974 Colloquium Mathematicae
On some adjunctions between the categories of adjunction-morphisms and monad-morphisms Andrzej Kurpiel; Józef Słomiński — 1980 Colloquium Mathematicae