By Pieter Zeeman. Nobel lecture delivered 2 May 1903, following the 1902 prize. University of Maryland hosts the inspected lecture mirror; neither host is the lecture author.
Cited passages: opening experimental account, sodium broadening, cadmium components, and polarization.
By Pieter Zeeman. Leiden laboratory communication a (No. 33a); original volume 1896–1897. Exact reprint date unverified.
By Pieter Zeeman. Leiden laboratory communication b (No. 33b); original volume 1896–1897. Exact reprint date unverified. This corrected reprint cites 1897–1898 corrections.
Cited passages: §§14, 20, 23–24, printed pp. 10, 16–18: reference scale, polarization reversals, and corrected inference.