Optimization of Structural Parameters by Improvement of Pneumohydraulic Fifth-Wheel Coupling Device at Semitrailer Hauling Rig Journal title: Lesnoy Zhurnal (Russian Forestry Journal) Authors: Vadim O. Nikonov,Valeryi I. Posmetyev,Andrey Yu. Manukovskii,Viktor V. Posmetyev,Alexander V. Avdyuh... Subject(s): Technology, Forestry