1. Schnell T., Macuda T., Keller M., Sensor Integration to Characterize Operator State, Chapter 3, in “Augmented Cognition; A Practitioner’s Guide”, Edited by Cdr. Dylan Schmorrow and Kay Stanney, ISBN 978-0-945289-33-3, 2008
2. J. Engler and T. Schnell, "Classifying Workload using Discrete Deterministic Nonlinear Models across Subject Populations and for Extended Time," in preparation for submission to IEEE Transactions on Systems, Man, and Cybernetics Part A: Systems and Humans, 2012.
3. Schnell T., Macuda T., Aviation Training Using Physiological and Cognitive Instrumentation, in “The PSI Handbook of Virtual Environments for Training and Education”, ISBN 0-313-35165-1, Edited by Cdr. Dylan Schmorrow , Joseph Cohn, and Denise Nicholson, 2008