1. Indigo, Δ2,2′-Bipseudoindoxyl;Chemistry of Heterocyclic Compounds: A Series Of Monographs;2008-01-02
2. Plantation science: improving natural indigo in colonial India, 1860–1913;The British Journal for the History of Science;2007-07-18
3. Occurrence and Metabolism of Simple Indoles in Plants;Fortschritte der Chemie Organischer Naturstoffe / Progress in the Chemistry of Organic Natural Products / Progrès dans la Chimie des Substances Organiques Naturelles;1959
4. β-Glucosidase;Die Hydrolisierenden Enƶyme der Ester, Kohlenhydrate und Glukoside;1928
5. Die Oxydationsfermente;Ergebnisse der Physiologie;1912-12