Wilkins, D. E. (1988). *Practical Planning: Extending the Classical AI Planning Paradigm*.

Morgan Kaufmann, San Mateo, CA.

Wu, D., & Nau, D. (2002). UM-Translog-2: A planning domain designed for AIPS-2002.

Tech. rep. CS-TR-4402, UMIACS-TR-2002-82, University of Maryland.