Zechmeister, T., A. H. Farnleitner, T. E. Rocke, F. Pittner, R. Rosengarten, R. L. Mach, A. Herzig, and A. K. T. Kirschner. “[PCR and ELISA - in Vitro Alternatives to the Mouse-Bioassay for Assessing the Botulinum-Neurotoxin-C1 Production Potential in Environmental samples?] [Article in German]”. ALTEX - Alternatives to Animal Experimentation, vol. 19, no. Supp. 1, Jan. 2002, pp. 49-54, https://altex.org/index.php/altex/article/view/2126.