FERDJALI, A.; LECHEKHAB, T. E.; MANOJLOVIĆ, S.; STANKOVIĆ, M.; MADONSKI, R.; BUJAKOVIC, D. Nonlinear Extended State Observer based Active Disturbance Rejection Control of a Laser Seeker System. Defence Science Journal, v. 71, n. 4, p. 535-544, 1 jul. 2021.