BondarenkoL. N. and ZhukP. F. (1997) “Exact estima tes for the rate of convergence of the <em class="a-plus-plus">s</em&gt;-step method of steepest descent in eigenvalue problems”, Ukrains’kyi Matematychnyi Zhurnal, 49(12), pp. 1694–1699. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/5175 (Accessed: 24November2024).