"Richard Johnsonbaugh" is Professor Emeritus of Computer Science at DePaul University. He has degrees in computer science and mathematics from the University of Oregon, Yale University, and the University of Illinois at Chicago. He is the author of numerous articles and books, including "Discrete Mathematics, Fifth Edition," and, with co-author Martin Kalin, "Object-Oriented Programming in C++, Second Edition, Applications Programming in C++," and "Applications Programming in ANSI C, Third Edition."
"Marcus Schaefer" is Assistant Professor of Computer Science at DePaul University. He hold