Zhang L, Liu X, Jia M, Yu Z, He C. Controllability and Ulam–Hyers stability analysis of conformable fractional differential systems with time delays and impulsive effects. NAMC [Internet]. 2026 Apr. 20 [cited 2026 Apr. 28];31:1-23. Available from: https://www.journals.vu.lt/nonlinear-analysis/article/view/46446