The categories of presheaves containing any category of algebras [Book] V. Trnková, J. Reiterman (1975)
The category of totally symmetric quasigroups is binding Jaroslav Ježek, Tomáš Kepka, P. Němec (1978) Acta Universitatis Carolinae. Mathematica et Physica
The extensive completion of a distributive category. Cockett, J.R.B., Lack, Stephen (2001) Theory and Applications of Categories [electronic only]
The infinite minimal rich monoid Radovan Gregor (1977) Acta Universitatis Carolinae. Mathematica et Physica
The structure of initial completions J. Adámek, H. Herrlich, G. E. Strecker (1979) Cahiers de Topologie et Géométrie Différentielle Catégoriques
Topological categories containing any category of algebras Jan Reiterman, Věra Trnková (1977) Czechoslovak Mathematical Journal