O. V. Ivanov and I. V. Orlovs’kyi, “Asymptotic properties of $M$-estimates of parameters in a nonlinear regression model with discrete time and singular spectrum”, Ukr. Mat. Zhurn., vol. 69, no. 1, pp. 28–51, Jan. 2017, Accessed: Dec. 06, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/1674