Roberto J. Bayardo Jr. Daniel P. Miranker Processing Queries for First Few Answers. 45-52 CIKM1996/P045.pdf 1996 conf/cikm/96 CIKM db/conf/cikm/cikm96.html#BayardoM96 db/conf/cikm/BayardoM96.html http://doi.acm.org/10.1145/238355.238372