Geological Institute, Department of Geochemistry and Petrology, Bulgarian Academy of Sciences, Acad.G.Bonchev-Str. Build. 24, 1113 Sofia, Bulgaria; Institute of Geochemistry and Petrology, ETH, 8092 Zurich, Switzerland
Institute of geology of ore deposits, petrography, mineralogy and geochemistry of the Russian Academy of Science, IGEM RAS 119017, Staromonetny per., 35, Moscow, Russia
University “Goce Delcev”- Stip, faculty of natural and technical sciences of Institute of Geology, Goce Delcev 89, 2000, Stip, F.Y.Republic of Macedonia
Institute of geology of ore deposits, petrography, mineralogy and geochemistry of the Russian Academy of Science, IGEM RAS 119017, Staromonetny per., 35, Moscow, Russia
University “Goce Delcev”- Stip, faculty of natural and technical sciences of Institute of Geology, Goce Delcev 89, 2000, Stip, F.Y.Republic of Macedonia