Nygård, K., Torvén, M., Ancker, C., Knauth, S. B., Hedlund, K., Giesecke, J., . . . Svensson, L. (2003). Emerging Genotype (GGIIb) of Norovirus in Drinking Water, Sweden. Centers for Disease Control and Prevention.

Nygård, Karin, Maria Torvén, Camilla Ancker, Siv Britt Knauth, Kjell-Olof Hedlund, Johan Giesecke, Yvonne Andersson, و Lennart Svensson. Emerging Genotype (GGIIb) of Norovirus in Drinking Water, Sweden. Centers for Disease Control and Prevention, 2003.

Nygård, Karin, et al. Emerging Genotype (GGIIb) of Norovirus in Drinking Water, Sweden. Centers for Disease Control and Prevention, 2003.