Ivanov, O. V., and K. K. Moskvychova. “Asymptotic Expansion of the Moments of Correlogram Estimator for the Random-Noise Covariance Function in the Nonlinear Regression Model”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 66, no. 6, June 2014, pp. 787–805, https://umj.imath.kiev.ua/index.php/umj/article/view/2177.