1. Recent Advances in Catalytic DeNOXScience and Technology
2. Trends in NO abatement: A review
3. Dieselnet http://www.dieselnet.com, 2011.
4. F. Birkhold, U. Meingast, P. Wassermann, O. Deutschmann, SAE Technical Paper, (2006) 2006-01-0643.
5. T.V. Johnson, SAE Technical paper, (2009) 2009-01-0121.