[1]
Y. I. Petunin and N. P. Tupko, “Theory of quadratic estimates of variance”,
Ukr. Mat. Zhurn.
, vol. 51, no. 9, pp. 1217–1231, Sep. 1999, Accessed: Apr. 13, 2025. [Online]. Available:
https://umj.imath.kiev.ua/index.php/umj/article/view/4718