Seaman, David. "DIGITAL LIBRARIES IN THE NEW MILLENNIUM: PARTNERS, PUBLISHERS, POTENTIALS, AND PITFALLS." In Electronic Publishing '99. Redefining the Information Chain - New Ways and Voices: Proceedings of an ICCC/IFI Conference. ELPUB. Washington D.C.: ICCC Pres, 1999.

Seaman, David. "PAYMENT MECHANISMS AND INTERNET COMMERCE:OR, THE PROMISE OF MICRO-CHARGING." In Electronic Publishing '99. Redefining the Information Chain - New Ways and Voices: Proceedings of an ICCC/IFI Conference. ELPUB. Washington D.C.: ICCC Pres, 1999.