Properties of a pair of functions which generate a dense subsemigroup of S(X). K.D. jr. Magill — 1996 Semigroup forum
Embedding semigroups into semigroups with countability index two. K.D. jr. Magill — 1989 Semigroup forum
A characterization of the arc by means of the C-index of itssemigroup. K.D. jr. Magill — 1993 Semigroup forum
Topological Nearrings Whose Additive Groups are Euclidean. K.D., Jr. Magill — 1995 Monatshefte für Mathematik
Semigroups for which the continuum congruences form finite chains. K.D. jr. Magill — 1984 Semigroup forum
Union and symmetry preserving homomorphisms of semigroups of closed relations. K.D. jr. Magill; S. Yamamuro — 1971 Semigroup forum