Buldygin , V. V., and V. V. Zayats. “Asymptotic Properties of Correlational Estimates in the Functional Spaces. I”. Ukrains’kyi Matematychnyi Zhurnal 43, no. 2 (June 30, 2025): 179–187. Accessed February 17, 2026. https://umj.imath.kiev.ua/index.php/umj/article/view/9354.