Ivanov, O. V., and K. K. Moskvychova. 2014. “Asymptotic Expansion of the Moments of Correlogram Estimator for the Random-Noise Covariance Function in the Nonlinear Regression Model”. Ukrains’kyi Matematychnyi Zhurnal 66 (6), 787–805. https://umj.imath.kiev.ua/index.php/umj/article/view/2177.