@article {3987,
	title = {Adaptive Selection of Query Execution Strategies by Learning Automata},
	journal = {Information Sciences},
	volume = {50},
	year = {1990},
	pages = {219--240},
	doi = {10.1016/0020-0255(90)90012-Y},
	author = {Frank Tompa and Jos{\'e} I. Icaza}
}
