1. National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania
2. Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, Eötvös Loránd Research Network (ELKH), Magyar Tudósok Körútja 2, H-1117 Budapest, Hungary
3. “Ilie Murgulescu” Institute of Physical Chemistry, Romanian Academy, Spl. Independentei 202, 060021 Bucharest, Romania
4. Department of Energy, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avda. Complutense 40, 28040 Madrid, Spain