Titus Brustur

Octavian Duliu

Unversity of Bucharest, Department of Atomic and Nuclear Physics, P.O. Box MG-11, 077125 Magurele (Ilfov), Romania

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Sergey Lyapunov

Geological Institute of Russian Academy of Science, Pyzhevsky lane 7, 119017 Moscow, Russia

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Anatoliy Gorbunov

Geological Institute of Russian Academy of Science, Pyzhevsky lane 7, 119017 Moscow, Russia

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Veronica Alexe

Geological Institute of Romania, 1 Caransebes str., 012271 Bucharest, Romania

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Titus Brustur

National Institute of Marine Geology and Geoecology, 23-25, Dimitrie Onciul str., 024053 Bucharest, Romania

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Calin Ricman

Geological Institute of Romania, 1 Caransebes str., 012271 Bucharest, Romania

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Ştefan Szobotka

National Institute of Marine Geology and Geoecology, 23-25, Dimitrie Onciul str., 024053 Bucharest, Romania

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Radu G Dimitriu

National Institute of Marine Geology and Geoecology, 23-25, Dimitrie Onciul str., 024053 Bucharest, Romania

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Cornel Pop

National Institute of Marine Geology and Geoecology, 23-25, Dimitrie Onciul str., 024053 Bucharest, Romania

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Marina Frontasyeva

Joint Institute of Nuclear Research, 6, Joliot Curie str. 141980 Dubna, Russia

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Mihai Iovea

Accent Pro 2000 ltd. Nerva Traian 1, 031041 Bucharest, Romania