Christmann, M (2010). “Otto Wallach: Founder of Terpene Chemistry and Nobel Laureate 1910”. 《Angewandte Chemie International Edition》 49 (50): 9580–9586. doi:10.1002/anie.201003155. PMID21110354.
Christmann, M (2010). “Otto Wallach: Founder of Terpene Chemistry and Nobel Laureate 1910”. 《Angewandte Chemie International Edition》 49 (50): 9580–9586. doi:10.1002/anie.201003155. PMID21110354.