Fiebig, Lena, Timo Smieszek, Jennifer Saurina, Jan Hattendorf, and Jakob Zinsstag. “Contacts Between Poultry Farms, Their Spatial Dimension and Their Relevance for Avian Influenza Preparedness”. Geospatial Health 4, no. 1 (November 1, 2009): 79–95. Accessed April 24, 2024. https://www.geospatialhealth.net/gh/article/view/212.