ผู้เขียน: Joe Hemmeter

DONALD BINDNER, Ph D, is Assistant Professor in the Department of Mathematics and Computer Science at Truman State University. MARTIN J. ERICKSON, Ph D, is Professor of Mathematics in the Department of Computer Science at Truman State University and the author or coauthor of numerous books on mathematical topics. JOE HEMMETER, Ph D, is a freelance software developer and a past professor of mathematics at both the University of Delaware and Truman State University.