Daniel Strack and Shreya G. Shah helped in the design and early implementation of the DSDS.
Arthur Delcher gave useful advice concerning the algorithm of the DSDS.
The SEKE referees provided useful comments for the improvement of this paper.
Copyright © 1994, 1995 Keith B. Gallagher, Bradley M. Kuhn, Dennis J. Smith.
Verbatim copying and distribution of this entire paper is permitted in any medium, provided this notice is preserved.