David Ellis Jonathan Furner-Hines Peter Willett 0002 On the Measurement of Inter-Linker Consistency and Retrieval Effectiveness in Hypertext Databases. 51-60 1994 SIGIR db/conf/sigir/sigir94.html#EllisFW94 conf/sigir/94 SIGIR1994/P051.pdf db/conf/sigir/EllisFW94.html