@inproceedings{liapis2013gecco,
	author = {Antonios Liapis and Georgios N. Yannakakis and Julian Togelius},
	title = {Enhancements to Constrained Novelty Search: Two-Population Novelty Search for Generating Game Content},
	booktitle = {Proceedings of Genetic and Evolutionary Computation Conference},
	pages = {343-350},
	year = {2013},
}