Kraft, A. “Animal Oil, Wound Balm, Prussian Blue, the Fire and Light Principium and the Philosophers’ Stone Made from Phosphorus: On the 350th Birthday of the Chymist Johann Conrad Dippel (1673-1734)”. Substantia, vol. 7, no. 2, May 2023, pp. 137-59, doi:10.36253/Substantia-2107.