ADAPTIVE CONTROLLER DESIGN FOR NONLINEAR SYSTEMS UNDER STATE CONSTRAINTS USING BARRIER LYAPUNOV FUNCTIONS AND INTEGRATOR BACKSTEPPING. The Journals of the Nigerian Association of Mathematical Physics, [S. l.], v. 73, p. 160–173, 2026. DOI: 10.60787/jnamp.vol73no.753. Disponível em: https://nampjournals.org.ng/index.php/home/article/view/753.. Acesso em: 5 oct. 2026.