M. Bari, G. Baumbach, B. Kuch, and G. Scheffknecht. Urban air quality : selected papers from the 6th International Conference on Urban Air Quality, 43, 31, special issue, page 4722-4732. Amsterdam, Elsevier, (2009)
A. Buchau, W. Rucker, U. Wössner, and M. Becker. COMPEL : the International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 28 (4):
948-963(2009)