1. Roelen O (1994) Chem Abstr 38:550
2. Roelen O (1938/1952) Chemische Verwertungsgesellschaft, mBH Oberhausen, DE Patent 849-584
3. Roelen O (1943) US Patent 2,317,066
4. Cornils B, Hermann WA (eds) (2002) Applied homogeneous catalysis with organometalic compounds, vol 1. Wiley-VCH, Weinheim
5. Weissermel K, Arpe JP (2003) Industrial organic chemistry. Wiley-VCH, Weinheim