Schober-Bendixen, Susanne. “[Application of the 3R (refine, Reduce, Replace) in the Quality Control of a Human Vaccine Against Tick-Borne-Encephalitis (TBE)] [Article in German]”. ALTEX - Alternatives to Animal Experimentation, vol. 14, no. 3, Aug. 1997, pp. 99-106, https://www.altex.org/index.php/altex/article/view/1589.