[1]
A. van der Ark, I. von Straaten-van de Kappelle, and C. F. M. Hendriksen, “[Pertussis serological potency test as an alternative to the intracerebral mouse protection test: development, evaluation und validation] [Article in German]”, ALTEX, vol. 15, no. Supp. 1, pp. 33–36, Jan. 1998.