Sofia Stamou Vlassis Krikos Pavlos Kokosis Alexandros Ntoulas Dimitris Christodoulakis Web Directory Construction Using Lexical Chains. 138-149 2005 conf/nldb/2005 NLDB http://dx.doi.org/10.1007/11428817_13 db/conf/nldb/nldb2005.html#StamouKKNC05