@article{contreras2014improved,
	doi = {10.1016/j.amc.2013.11.050},
	pages = {821--830},
	year = {2014},
	journal = {Applied Mathematics and Computation},
	author = {Jhonatan Contreras and Ivan Amaya and Rodrigo Correa},
	title = {An Improved Variant of the Conventional Harmony Search Algorithm},
}