db/conf/ht/HillHJLHH97.html Gary Hill Gerard Hutchings Roger James Steve Loades Jacques Halé Mike Hatzopulous Exploiting Serendipity Amongst Users To Provide Support For Hypertext Navigation. 212-213 HT1997/P212.pdf 1997 conf/ht/97 Hypertext db/conf/ht/ht97.html#HillHJLHH97 http://doi.acm.org/10.1145/267437.267462