Hüntelmann, Axel C. “Diphtheria serum and serotherapy. Development, Production and regulation in fin de siècle Germany”. Dynamis: Acta Hispanica ad Medicinae Scientiarumque Historiam Illustrandam, vol.VOL 27, pp. 107-31, https://raco.cat/index.php/Dynamis/article/view/114300.