@article {ulusoy1993simultaneous,
	title = {Simultaneous scheduling of machines and automated guided vehicles},
	journal = {THE INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH},
	volume = {31},
	number = {12},
	year = {1993},
	pages = {2857{\textendash}2873},
	publisher = {Taylor \& Francis},
	author = {Ulusoy, G and {\"U}mit Bilge}
}
