Schimmel, D., and D. van Truong. “[Pasteurellas in the Embryonated Eggs. (2. Immunity tests)] [Article in German]”. ALTEX - Alternatives to Animal Experimentation, vol. 12, no. 3, Aug. 1995, pp. 156-8, https://www.altex.org/index.php/altex/article/view/1665.