"Budinia or Scythia?" the Ethnic and Cultural Belonging of the Middle Don Population During 5th - 4th Centuries BC von V. I. Guljaev

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The motive of a bear in the Scythian animal style von V. I. Guljaev

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Dynamics of Re-rolling of Crowned Bit over a Curvilinear Surface of a Bore Hole Bottom von V. I. Guljaev, P. Z. Lugovoj, L. V. Shevchuk

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Numerical Modeling an Elastic Bending of a Drill String in an Ultra-Deep Curvilinear Bore-Drill von V. I. Guljaev, P. Z. Lugovoj, E. N. Andrusenko

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Gulyaev V. I., Lugovoi P. Z., Borshch E. I. Self-excitation of Vibrations of the Boring Head of Drill Column von V. I. Guljaev, P. Z. Lugovoj, E. I. Borshch

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The Torsional Vibrations of a Deep Bore-Hole in a Viscous Liquid Medium von V. I. Guljaev, P. Z. Lugovoj, O. V. Glushakova, S. N. Glazunov

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