User Needs for Location-Based Services in Protected Areas: Case Study Swiss National Park. - Katrin Krug; Walter Abderhalden; Ruedi Haller (J. Inf. Technol. Tour., 2002)

Implementation of a Spatial Data Infrastructure for Standardized Transnational Landscape Data within the INTERREG III B project HABITALP. - Arno Röder; Ulrich Kias; Ruedi Haller; Annette Lotz (EnviroInfo, 2006)