1. K. Alster and T. Przymusiński, Normality and Martin's Axiom, (to appear).
2. H. Cook, Cartesian products and continuous semi-metrics, Proceedings of the Arizona State University Topology Conference, 1967 (Tempe, Arizona, 1968) 58–63.
3. Inverse limits of perfectly normal spaces;Cook;Proceedings of the American Mathematical Society,1968
4. B. Fitzpatrick, Moore spaces, Invited Hour Address at the November, 1973 meeting of the American Mathematical Society in Atlanta, Georgia.
5. Two theorems on metrizability of Moore spaces;Fitzpatrick;Pacific Journal of Mathematics,1966