@ARTICLE
        { NNsicomp17,
          TITLE = "Time-Optimal Top-$k$ Document Retrieval",
          AUTHOR = "G. Navarro and Y. Nekrich",
          JOURNAL = "SIAM Journal on Computing",
          YEAR = 2017,
	  VOLUME = 46,
	  NUMBER = 1,
	  PAGES = "89--113"
        }