@misc{indiciaee8d686f72a34, title = {An Approximate Direct Inverse as a Preconditioner for Ill-conditioned Problems.}, author = {Lee, Chung Hyun and Jin-Fa, Lee. and Langston, William L. and Zinser, Brian Frederick and Dang, Vinh Quang and Huang, Andy and Campione, Salvatore}, year = {2020}, url = {https://www.osti.gov/biblio/1761591}, note = {Source identifier: 1761591} }