1. Solar Energy and Building Physics LaboratoryEcole Polytechnique Fédérale de LausanneLausanneSwitzerland
2. Telecom Telemetry High Frequency LabDipartimento Tecnologie InnovativeUniversity of Applied Sciences of Southern SwitzerlandGalleria 2, CH‐6928 MannoSwitzerland
3. Innovation DepartmentSwisscom AGP.O. Box, CH‐3050BernSwitzerland
4. AGC Verres Industriels SAQuartier Verreries 25CH‐2740MoutierSwitzerland
5. Class 4 Laser Professionals AGIndustriering 43, Industriering 43, CH‐3250 LyssSwitzerland