1. Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
2. Architecture,
Wood and Civil Engineering, Bern University of Applied Sciences, Solothurnstrasse 102, 2500 Biel, Switzerland
3. HES-SO Haute école d’ingénierie et d’architecture, Pérolles 80, 1705 Fribourg, Switzerland
4. Chemistry
Department, University of Fribourg, Chemin de Musée 9, 1700 Fribourg, Switzerland