Zuev, A. L. “Localization of the Limit Set of Trajectories of the Euler-Bernoulli Equation With Control”. Ukrains’kyi Matematychnyi Zhurnal 60, no. 2 (February 25, 2008): 173–182. Accessed April 23, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3147.