Connolly, D., Hansen, K., Drysdale, D., Lund, H., Mathiesen, B. V., Werner, S., Persson, U., Møller, B., Wilke, O. G., Bettgenhäuser, K., Pouwels, W., Boermans, T., Novosel, T., Krajačić, G., Duić, N., Trier, D., Møller, J. D., Odgaard, A. M. & Jensen, L. L., Jun 2015, Department of Development and Planning, Aalborg University. 550 p.