@inbook {10938,
	title = {A Metaheuristic Approach to the Graceful Labeling Problem},
	booktitle = {Modeling, Analysis, and Applications in Metaheuristic Computing: Advancements and Trends},
	year = {2012},
	pages = {217-232},
	publisher = {IGI Global},
	organization = {IGI Global},
	author = {Houra Mahmoudzadeh and Kourosh Eshghi},
	editor = {P. Yin}
}
