E. Lopez, A. Monzon, P. Pfaffenbichler, D. Fiorello, S. Shepherd, M. Wegener:
"Chapter 11: Overall assessment of results";
in: "STEPS - Transport strategies under the scarcity of energy supply", A. Monzon, A. Nuijten (ed.); Buck Consultants International, The Hague, 2006, ISBN: 90-9020880-1, 174 - 180.
Project Head Günter Emberger:
STEPS