Right simple subsemigroups and right subgroups of compact convergence semigroups. Ho, Phoebe; So, Shing S. — 2000 International Journal of Mathematics and Mathematical Sciences
Some results on compact convergence semigroups defined by filters. Ho, Phoebe; Plummer, Paul; So, Shing — 1998 International Journal of Mathematics and Mathematical Sciences
On completely 0-simple semigroups. Ho, Yue-Chan Phoebe — 1996 International Journal of Mathematics and Mathematical Sciences