@ARTICLE 
        { ANRRtods22,
          TITLE = "Optimal Joins using Compressed Quadtrees",
          AUTHOR = "D. Arroyuelo and G. Navarro and J. L. Reutter and
		    J. Rojas-Ledesma",
	  JOURNAL = "ACM Transactions on Database Systems",
	  YEAR = 2022,
	  VOLUME = 47,
	  NUMBER = 2,
	  PAGES = "article 8"
        }