Martynyuk, A. A., and Yu. A. Martynyuk-Chernienko. 2014. “Analysis of the Set of Trajectories of Fuzzy Equations of Perturbed Motion”. Ukrains’kyi Matematychnyi Zhurnal 66 (11), 1512–1527. https://umj.imath.kiev.ua/index.php/umj/article/view/2242.