@article {geinoz2008construction,
	title = {Construction of balanced sports schedules using partitions into subleagues},
	journal = {Operations Research Letters},
	volume = {36},
	number = {3},
	year = {2008},
	pages = {279{\textendash}282},
	publisher = {North-Holland},
	author = {Geinoz, A and Ekim, Tinaz and de Werra, Dominique}
}
