Effect of Non-Uniform Torsion on Elastostatics of a Frame of Hollow Rectangular Cross-Section Journal title: Strojnicky casopis - Journal of Mechanical Engineering Authors: Justín Murín, Mehdi Aminbaghai, Vladimír Goga, Vladimír Kutiš, Juraj Paulech and Juraj Hrabovský Subject(s): Engineering, Mechanical Engineering