A*
↑ Pearl, Judea (1984) (English). "Heuristics intelligent search strategies for computer problem solving". Addison-Wesley. ISBN 0201055945
1 2 Hoffmann, Jörg, and Bernhard Nebel. "The FF planning system: Fast plan generation through heuristic search." Journal of Artificial Intelligence Research (2001): 253-302.
↑ Helmert, Malte, and Carmel Domshlak. "Landmarks, critical paths and abstractions: what's the difference anyway?." ICAPS. 2009.
↑ How Good is Almost Perfect?. M Helmert, G Röger - AAAI, 2008
↑ Peter E. Hart; Nils J. Nilsson; Bertram Raphael (July 1968).