@article{nelson2009-ras,
	author = {Andrew L. Nelson and Gregory J. Barlow and Lefteris Doitsidis},
	title = {Fitness Functions in Evolutionary Robotics: A Survey and Analysis},
	journal = {Robotics and Autonomous Systems},
	year = {2009},
	volume = {57},
	number = {4},
	pages = {345 -- 370},
	url = {http://www.cs.cmu.edu/~gjb/includes/publications/journal/nelson2009-ras/nelson2009-ras.pdf}
}