Jeff Boersema and Erica (Taylor) Whitaker wrote this paper during the summer of 1992 during an NSF-sponsored Research Experiences for Undergraduates program at Calvin and Hope Colleges under the supervision of Dr. Gerard Venema. At the time, Jeff was about to be a senior at Calvin College. He is now on the faculty at Seattle University.
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Faculty Sponsor: Gerard A. Venema - Department of Mathematics and Statistics Calvin College, Grand Rapids, MI