<p class=\"MsoNormal\" style=\"text-align: center;\" align=\"center\"><span style=\"font-size: 14pt; line-height: 115%; font-family: \'Times New Roman\', serif;\" lang=\"EN-US\">The dynamics of vertical gyroscope rotor with mass imbalance and disk skewing with an allowance for hard nonlinear resilient characteristics&nbsp;&nbsp;</span></p>