db/conf/ht/HayashiNHTHG98.html Koichi Hayashi Takahiko Nomura Tan Hazama Makoto Takeoka Sunao Hashimoto Stephan Gudmundson Temporally Threaded Workspace: A Model for Providing Activity-Based Perspectives on Document Spaces. 87-96 HT1998/P087.pdf 1998 conf/ht/98 Hypertext http://doi.acm.org/10.1145/276627.276637 db/conf/ht/ht98.html#HayashiNHTHG98