Moussa A, Nikolskii MS. An estimation from within of the reachable set of nonlinear R. Brockett integrator with small nonlinearity. YUJOR [Internet]. 2013 Oct. 1 [cited 2025 Jul. 29];23(3):355-6. Available from: https://yujor.erc.fon.bg.ac.rs/index.php/yujor/article/view/371