@article {bonomo2013perfectness,
	title = {Perfectness of clustered graphs},
	journal = {Discrete Optimization},
	volume = {10},
	number = {4},
	year = {2013},
	pages = {296{\textendash}303},
	publisher = {Elsevier},
	author = {Bonomo, Flavia and Cornaz, Denis and Ekim, Tinaz and Ries, Bernard}
}
