Emden R. Gansner is Principal Technical Staff Member of AT&T Laboratories. Having taught at several prestigious universities, he is currently an adjunct Professor of Computer Science at Stevens Institute of Technology. He has published articles in numerous journals, such as J. Combinatorial Theory, Discrete Mathematics and SIAM J. Algorithms and Discrete Methods. He also jointly received a patent on a technique for drawing directed graphs.

John H. Reppy is an Associate Professor of Computer Science at University of Chicago. He is also Associate Editor of ACM TOPLAS and author of Concurrent Programming in ML also published by Cambridge University Press.