1. A. A. Martynyuk and V. I. Slyn’ko, “On global existence of solutions of fuzzy differential equations,” Diff. Uravn., 42, No. 10, 1324–1336 (2006).
2. V. A. Plotnikov, A. V. Plotnikov, and A. N. Vityuk, Differential Equations with Multivalued Right-Hand Side: Asymptotic Methods [in Russian], AstroPrint, Odessa (1999).
3. L. S. Pontryagin, Continuous Groups [in Russian], Nauka, Moscow (1973).
4. N. G. Chetaev, “On stable trajectories of dynamics,” in: Studies on Analytic Mechanics [in Russian], Izd. AN SSSR, Moscow (1962), pp. 250–268.
5. V. Lakshmikantham and Ram Mohapatra, Theory of Fuzzy Differential Equations and Inclusions, Florida Institute of Technology, Melbourne (2003).