db/conf/cikm/Ribeiro-NetoLS99.html Berthier A. Ribeiro-Neto Alberto H. F. Laender Altigran Soares da Silva Extracting Semi-Structured Data Through Examples. 94-101 CIKM1999/P094.pdf 1999 conf/cikm/99 CIKM http://doi.acm.org/10.1145/319950.319962 db/conf/cikm/cikm99.html#Ribeiro-NetoLS99