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Köppel, C.; Knopf, L.; Ryser, M.-P.; Miserez.; R.; Thür, B.; Stärk. K.D.C. (2006) Sero-surveillance for selected infectious disease agents in wild boars and outdoor pigs in Switzerland. Europ J Wildl Res, (2007) 53:212-220
Knopf, L.; Köppel, C.; Leuenberger, R.; Miserez, R.; Thür, B.; Ryser, M.-P.; Stärk. K.D.C. (2006) Erkenntnisse aus der mehrjährigen serologische Überwachung von Tierseuchenerregern beim Wildschwein in der Schweiz, DVG Tagung: Von der Überwachung zur Bekämpfung, Vetsuisse Faculty, Universität Bern, Switzerland
Köppel, C. 2006: Sero-surveillance for selected infectious diseases in wild boars and outdoor pigs in Switzerland. Thesis, Vetsuisse Faculty University of Bern, Switzerland.