@book{Umnus2025,
author = {Umnus, Otto},
year = {2025},
language = {ger},
copyright = {https://creativecommons.org/public-domain/cc0/},
title = {Die photobiologische Sensibilisierungstheorie in der Pellagrafrage},
url = "http://dx.doi.org/10.17169/refubium-47189",
}