Weirflar culture, causality and quantum theory, Historical Studies in the Physical Sciences, pp.1-115, 1918. ,
The Philosophy of Quantum Mechanics, Bulletin of the Atomic Scientist, vol.19, issue.12, p.204, 1963. ,
quoting E. Zilsel, "P. Jordans Versuch, den Vitalismus quanten mechanisch zu retten, Erkenntnis, vol.5, pp.161-56, 1935. ,