Wherehoo and Periscope: a time & place server and tangible browser for the real world. - Jim Youll (CHI Extended Abstracts, 2001)

Agent-Based Electronic Commerce: Opportunities and Challenges. - Jim Youll (ISADS, 2001)

Personalized location-based brokering using an agent-based intermediary architecture. - Gaurav Tewari; Jim Youll; Pattie Maes (Decis. Support Syst., 2003)