Rosskopf-Streicher U, Johannes S, Wilhelm M, Gyra H, Cussler K. Potency testing of swine erysipelas vaccines by serology - results of a prevalidation study. ALTEX [Internet]. 1999 Aug. 1 [cited 2024 Apr. 25];16(3):123-8. Available from: https://altex.org/index.php/altex/article/view/1447