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APA Citation
Helfert, M., Krempels, K., Klein, C., Donnellan, B., & Gusikhin, O. (Eds.) (2015). Smart cities, green technologies, and intelligent transport systems : 4th International Conference, SMARTGREENS 2015, and 1st International Conference VEHITS 2015, Lisbon, Portugal, May 20-22, 2015, Revised selected papers. Cham : Springer. http://access.bl.uk/ark:/81055/vdc_100068116810.0x000001