Finn Terje Hegge, Paul G. Hitchen, Finn Erik Aas, Heidi Kristiansen, Cecilia Løvold, Wolfgang Egge-Jacobsen, Maria Panico, Weng Yee Leong, Victoria Bull, Mumtaz Virji, Howard R. Morris, Anne Dell, Michael Koomey
Proc Natl Acad Sci U S A. 2004 Jul 20; 101(29): 10798–10803. Published online 2004 Jul 12. doi: 10.1073/pnas.0402397101