Homomorphic correspondences of relational systems František Krutský (1983) Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
Homomorphism theorem for equationally partial algebras Horst Reichel (1983) Commentationes Mathematicae Universitatis Carolinae
Homomorphisms of contexts and isomorphisms of concept lattices František Machala, Marek Pomp (1996) Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica
Homomorphisms of direct powers of algebras Andrzej Ehrenfeucht, Siemion Fajtlowicz, Jan Mycielski (1979) Fundamenta Mathematicae
Homomorphisms of unary algebras and of their expansions W. Lampe, J. Sichler, V. Trnková (1993) Colloquium Mathematicae