Willgert, Katriina J. E., Birgit Schroedle, and Heinzpeter Schwermer. “Spatial Analysis of Bluetongue Cases and Vaccination of Swiss Cattle in 2008 and 2009”. Geospatial Health 5, no. 2 (May 1, 2011): 227–237. Accessed July 24, 2024. https://www.geospatialhealth.net/gh/article/view/175.