TY - JOUR T1 - Multilevel augmentation methods for solving operator equations AU - Z. Chen, B. Wu & Y. Xu JO - Numerical Mathematics, a Journal of Chinese Universities VL - 1 SP - 31 EP - 55 PY - 2015 DA - 2015/02 SN - 14 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/nm/8000.html KW - AB -