[1] H. HERRLICH: Initial completion. Kategorienseminar Hagen 1976, 3-26.
[2] J. R. ISBELL:
Subobjects, adequacy, completeness and categories of algebras. Rozprawy Matematyczne 34 (1964), 1-3З.
Zbl 0133.26703
[3] J. ROSICKÝ:
Codensity and binding categories. Comment. Math. Univ. Carolinae 16 (1973), 515-529.
MR 0376800