Kjelland, M. B. “Using Input Shaping and Pressure Feedback to Suppress Oscillations in Slewing Motion of Lightweight Flexible Hydraulic Crane”. International Journal of Fluid Power, vol. 16, no. 3, Nov. 2015, pp. 141-8, https://journals.riverpublishers.com/index.php/IJFP/article/view/185.