Rosskopf, Ute, Kerstin Noeske, and Esther Werner. 2005. “Replacement of the in Vivo Neutralisation Test for Efficacy Demonstration of Tetanus Vaccines Ad Us. Vet”. ALTEX - Alternatives to Animal Experimentation 22 (3):169-74. https://www.altex.org/index.php/altex/article/view/897.