@ARTICLE
        { GKNPtcs12.3,
	  AUTHOR = "T. Gagie and J. K{\"a}rkk{\"a}inen and G. Navarro and 
		   S.J. Puglisi",
	  TITLE = "Colored Range Queries and Document Retrieval",
	  JOURNAL = "Theoretical Computer Science",
	  YEAR = 2013,
	  VOLUME = 483,
	  PAGES = "36--50"
	}