Cyril U. Orji, Mark Allen Weiss, Jon A. Solworth. Improved Tradtional Mirror. In David B. Lomet, editor, Foundations of Data Organization and Algorithms, 4th International Conference, FODO 93, Chicago, Illinois, USA, October 13-15, 1993, Proceedings. Volume 730 of Lecture Notes in Computer Science, pages 329-344, Springer, 1993.