The paper was presented at the fourth Fast Software Encryption Workshop, held in Haifa, Israel, 20-22 Jan 1997.
The citation is
M. Kwan, The Design of the ICE Encryption Algorithm, proceedings of Fast Software Encryption - Fourth International Workshop, Haifa, Israel, Springer-Verlag, pp. 69-82, 1997
The paper is provided in compressed postscript format, ice.ps.gz (81626 bytes).
For what it's worth, the slides used to present the paper are also available, in HTML format.