Expressive Power of Tree and String Based Wrappers.

Daisuke Ikeda Yasuhiro Yamada Sachio Hirokawa Expressive Power of Tree and String Based Wrappers. 21-26 2003 conf/ijcai/2003iiweb IIWeb http://www.isi.edu/info-agents/workshops/ijcai03/papers/ikeda1.pdf db/conf/ijcai/ijcai2003iiweb.html#IkedaYH03