TY - RPRT TI - Smoothed aggregation for difficult stretched mesh and coefficient variation problems AU - Hu, Jonathan J. AU - Siefert, Christopher M. AU - Tuminaro, Raymond S. PY - 2022 DO - 10.1002/nla.2442 UR - https://www.osti.gov/biblio/1996046 ID - 1996046 ER -