What is a place?: allowing users to name and define places. - Petra Fagerberg; Fredrik Espinoza; Per Persson (CHI Extended Abstracts, 2003)

Socially Enhanced Travel Booking: A Case Study. - Åsa Rudström; Petra Fagerberg (J. Inf. Technol. Tour., 2003)

GeoNotes: A Location-Based Information System for Public Spaces. - Per Persson; Fredrik Espinoza; Petra Fagerberg; Anna Sandin; Rickard Cöster (Designing Information Spaces, 2003)

eMoto: emotionally engaging interaction. - Petra Fagerberg; Anna Ståhl; Kristina Höök (Pers. Ubiquitous Comput., 2004)