@misc{indiciaeeb90a6a47e30, title = {Extending PETSc’s Composable, Hierarchical, Nested Solvers (Final Report)}, author = {Knepley, Matthew Gregg}, year = {2022}, doi = {10.2172/2223070}, url = {https://www.osti.gov/biblio/2223070}, note = {Source identifier: 2223070} }