Refsum, T., Heir, E., Kapperud, G., Vardund, T., & Holstad, G. (2002). Molecular Epidemiology of Salmonella enterica Serovar Typhimurium Isolates Determined by Pulsed-Field Gel Electrophoresis: Comparison of Isolates from Avian Wildlife, Domestic Animals, and the Environment in Norway. American Society for Microbiology.

Refsum, Thorbjørn, Even Heir, Georg Kapperud, Traute Vardund, a Gudmund Holstad. Molecular Epidemiology of Salmonella Enterica Serovar Typhimurium Isolates Determined By Pulsed-Field Gel Electrophoresis: Comparison of Isolates From Avian Wildlife, Domestic Animals, and the Environment in Norway. American Society for Microbiology, 2002.

Refsum, Thorbjørn, et al. Molecular Epidemiology of Salmonella Enterica Serovar Typhimurium Isolates Determined By Pulsed-Field Gel Electrophoresis: Comparison of Isolates From Avian Wildlife, Domestic Animals, and the Environment in Norway. American Society for Microbiology, 2002.