1. Research Institute for Analytical Instrumentation Subsidiary, National Institute for Research and Development for Optoelectronics INOE 2000, 67 Donath Street, 400293 Cluj-Napoca, Romania
2. Faculty of Physics, Babes-Bolyai University, 1 Mihail Kogalniceanu Street, 400084 Cluj-Napoca, Romania
3. National Institute for Research and Development of Isotopic and Molecular Technologies, 67-103 Donath Street, 400293 Cluj-Napoca, Romania