Rasmussen, M. D., Madsen, B. & Bjerring, M. (2002). Available tests and reference methods. I Definition of normal and abnormal milk at time of milking. Workshop of the EU-project (QLK5-2000-31006): Implications of the introduction of automatic milking on dairy farms: DIAS Internal report no. 169 (s. 63-73)
Vaarst, M., Fossing, C. & Thamsborg, S. M. (2002). Discussion report: Alternative treatment methods. I Proc. Fifth NAHWOA Workshop "Positive health: preventive measures and alternative strategies", Rødding, Denmark, November 2001 (s. 52-56)