GRIGORYAN, A. B. ALGEBRAIC MULTIGRID PRECONDITIONER FOR ELLIPTIC PROBLEMS WITH MIXED TYPE BOUNDARY CONDITIONS II. MULTIGRID PRECONDITIONER. Proceedings of the YSU A: Physical and Mathematical Sciences, Yerevan, Armenia, v. 40, n. 2 (210), p. 41–48, 2006. DOI: 10.46991/PYSU:A/2006.40.2.041. Disponível em: https://pub.ysu.am/index.php/proceedings-phys-math/article/view/vol40_no2_2006_pp041-048. Acesso em: 20 sep. 2024.