Wolff, Cecilia, Mark Stevenson, Ulf Emanuelson, Agneta Egenvall, and Ann Lindberg. 2011. “Spatial Patterns of Recorded Mastitis Incidence and Somatic Cell Counts in Swedish Dairy Cows: Implications for Surveillance”. Geospatial Health 6 (1):117-23. https://doi.org/10.4081/gh.2011.163.