- Morgan Kaufmann Publishers, San Francisco, Calif., (1994)
- CHI 95 Conference Companion, page 377-378. ACM, (1995)
- CHI Extended Abstracts, page 140-141. ACM, (1997)
- CHI Extended Abstracts, page 228. ACM, (1997)
- CHI Extended Abstracts, page 103-104. ACM, (1997)
- CHI, page 149-152. ACM, (1992)
- CHI, page 373-380. ACM, (1992)
- CHI, page 557-564. ACM, (1992)
- SIGIR Forum 24(1-2):2-10 (1990)
- IACR Cryptology ePrint Archive (2008)
- CoRR (2003)
- CoRR (2011)
- DATA BASE 30(2):66-81 (1999)
- interactions (September 2010)
- ECIS, page 370-385. Copenhagen Business School, (1999)
- ECIS, page 451-466. Euro-Arab Management School, (1998)
- IEEE Software 14(1):94-95 (1997)
- IEEE Software 12(6):99-100 (1995)
- IEEE Software 14(4):27-28 (1997)
- IEEE Software 13(3):89-90 (1996)


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