1. V. I. Vernadsky Institute of General and Inorganic Chemistry of the NAS of Ukraine, pr. Palladina 32/34, 03142 Kyiv, Ukraine
2. National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 37 Peremohy Avenue, 03056 Kyiv, Ukraine
3. Institute of Magnetism of the NAS of Ukraine, blvd. Akad. Vernadskogo 36-b, 03142 Kyiv, Ukraine
4. M. P. Semenenko Institute of Geochemisty, Mineralogy and Ore Formation of the NAS of Ukraine, pr. Palladina 34, 03142 Kyiv, Ukraine