ITSM 2000 Professional Version 6.0, developed by Peter J. Brockwell and Richard A. Davis, B&D Enterprises, Inc., Copyright 1999. The Student Version is included in Introduction to Time Series and Forecasting, 1996, Springer-Verlag New York Inc. (ISBN: 0387947191). The Professional Version is obtainable from [email protected]. Web Page of the author: http://www.stat.colostate.edu/~pjbrock/