Kharchenko S. A parallel algorithm for the sparse $QR$ decomposition of a rectangular upper quasi-triangular matrix with ND-type sparsity. Num. Meth. Prog. [Internet]. 2015 Oct. 2 [cited 2025 Dec. 14];16(46):566-77. Available from: https://en.num-meth.ru/index.php/journal/article/view/859