[1] J. Adámek: On the cogeneration of algebras. to appear in Math. Nachrichten. MR 0543416

[2] M. Barr P. A. Grillet D. van Osdol: Exact categories. Springer Lecture Notes 236, Springer 1971.

[3] M. Barr: Right exact functors. J. Pure Appl. Algebra 4 (1974), 1 - 8. DOI 10.1016/0022-4049(74)90025-5 | MR 0374239 | Zbl 0281.18003

[4] H.-J. Hoehnke: Über den Verband der Faktorobjekte eines Objekts in einer Bikategorie. Studien zur Algebra und ihre Anwendungen, Akademie-Verlag Berlin (1972) 26-40. MR 0344302 | Zbl 0275.18009

[5] L. Kučera A. Pultr: On a mechanism of defining morphisms in concrete categories. Cahiers Top. Geom. Diff. 13 (1974), 397-410. MR 0393173

[6] T. Sturm: Verbände von Kernen isotoner Abbildungen. Czech. Math. J. 22 (1972), 126-144. MR 0307919 | Zbl 0346.06002

[7] T. Sturm: Einige Charakterisationen von Ketten. Czech. Math. J. 23 (1973), 375-391. MR 0329985 | Zbl 0346.06005

[8] T. Sturm: On the lattices of kernels as isotonic mappings II. Czech. Math. J. 27 (1977), 271-308. MR 0498298

[9] T. Sturm: Lattices of convex equivalences. Czech. Math. J. 29 (1979), 396-405. MR 0536067 | Zbl 0433.06007