Nakonechnyi, O. G., G. I. Kudin, P. M. Zinko, and T. P. Zinko. “GUARANTEED ROOT MEAN SQUARE ESTIMATES OF OBSERVATIONS WITH UNKNOWN MATRICES”. Journal of Numerical and Applied Mathematics 1, no. 2 (February 1, 2023): 98–115. Accessed October 6, 2026. https://jnam.knu.ua/index.php/jnam/article/view/154.