1. Faculty of Civil Engineering, Technical University of Cluj-Napoca, 15, C. Daicoviciu Street, 400114 Cluj-Napoca, Romania
2. Faculty of Construction, Cadaster and Architecture, University of Oradea, 4, B.S. Delavrancea Street, 410058 Oradea, Romania
3. INCDO-INOE 2000, Research Institute for Analytical Instrumentation, 67 Donath Street, 400293 Cluj-Napoca, Romania
4. Department of Physics and Chemistry, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania