1. US 9.296.614 (2016 Corning); US 9.278.346 (2016 Clariant); US 9.079.164 (2015); US 7.776.782 (2010 Battelle); US 7.186.668 and WO 2002/102.511 (2002 Battelle); Cejka/Corma/Zones Chapter9;
2. Lynch; Richardson p.8;
3. Anderson/Boudart Vol. 2 p.171;
4. Moulijn/van Leeuwen/van Santen p.419;
5. Ertl/Knözinger/Weitkamp p.2210;