Storage and network requirements of a low-cost computer-based virtual classroom. - Paul Juell; Daniel Brekke; Ronald J. Vetter; John Wasson (ACM SIGSOFT Softw. Eng. Notes, 1994)

A Multicast Tree Construction Algorithm for Large Multiparty Conferences. - Paul Juell; Daniel Brekke; Ronald J. Vetter (Telecommun. Syst., 2001)