??sa Rudstr??m, R. C??ster, K. H????k, and M. Svensson. Proceedings of MUM (Mobile and Ubiquitious Multimedia) 2003 Workshop: Designing for ubicomp in the wild: Methods for exploring the design of mobile and ubiquitous services, Norrk??ping, (2003)
A. Aabrandt, M. Olsen, and C. Busch. BIOSIG, volume P-196 of LNI, page 1-11. GI, (2012)additionally published as volume P-196 in the "Lecture Notes in Informatics" (LNI) series.