--> The AAAI 2010 Outstanding Award paper that discusses transition-based SAT encodings
--> paper that discusses the relative efficacy of causal encodings:
--> paper on CSP encodings for planning
-->paper on doing non-directional (i.e., not level-by-level) search on graphplan
--> paper on doing local search on planning graph
--> Use of negative interaction analysis in PG heuristics
--> use of planning graph heuristics in partial order planning