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Roesch, Markus; G Doherr, Marcus; Schären, Walter; Schällibaum, Melchior; Blum, Jürg W (2007). Subclinical mastitis in dairy cows in Swiss organic and conventional production systems. Journal of dairy research, 74(1), pp. 86-92. London: Cambridge University Press 10.1017/S002202990600210X
Kuhnert, Peter; Dubosson, Christoph R.; Roesch, Markus; Homfeld, Esther; Doherr, Marcus G.; Blum, Jürg W. (2005). Prevalence and risk-factor analysis of Shiga toxigenic Escherichia coli in faecal samples of organically and conventionally farmed dairy cattle. Veterinary microbiology, 109(1-2), pp. 37-45. Amsterdam: Elsevier 10.1016/j.vetmic.2005.02.015
