Christmann، M (2010). "Otto Wallach: Founder of Terpene Chemistry and Nobel Laureate 1910". Angewandte Chemie International Edition. ج. 49: 9580–9586. DOI:10.1002/anie.201003155. PMID:21110354.
Christmann، M (2010). "Otto Wallach: Founder of Terpene Chemistry and Nobel Laureate 1910". Angewandte Chemie International Edition. ج. 49: 9580–9586. DOI:10.1002/anie.201003155. PMID:21110354.