HAKOPIAN, Yu.A.; HOVHANNISYAN, R.Z. ON THE TWO-LEVEL PRECONDITIONING IN LEAST SQUARES METHOD. Proceedings of the YSU A: Physical and Mathematical Sciences, Yerevan, Armenia, v. 48, n. 1 (233), p. 7–15, 2014. DOI: 10.46991/PSYU:A/2014.48.1.007. Disponível em: https://journals.ysu.am/index.php/proceedings-phys-math/article/view/vol48_no1_2014_pp007-015. Acesso em: 22 nov. 2024.