Venelin Jelev

University of Mining and Geology, Department of Mathematical Geophysics, Sofia
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University of Architecture, Civil Engineering and Geodesy
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University of Mining and Geology, Sofia
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University of Mining and Geology, Sofia
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Geology and Geophysics Corporation
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New Bulgarian University
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University of Mining and Geology, Department of Mathematical Geophysics, Sofia
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Sofia University “K. Ochridski”

Volume 39 1-2 September 2010