1. US 9.233.917 and 9.169.197 (2009 Invista); US 9.061.970 (2015); US 5.723.641 (1998 DuPont); US 6.852.661 (2001 BASF); Steinborn Chapter 12; Behr Chapter26;
2. van Leeuwen‐4;
3. Mikami/Lautens Chapter 4; Caprio/Williams Chapter 2.11;
4. Tamaru; Dyker; Cornils/Herrmann‐3 p.468;
5. Cornils/Herrmann‐2 p.393;