@article{etna_vol54_pp210-233, author = {R. D. Falgout and T. A. Manteuffel and B. O'Neill and J. B. Schroder}, title = {Multigrid reduction in time with Richardson extrapolation}, journal = {Electron. Trans. Numer. Anal.}, volume = {54}, year = {2021}, pages = {210--233}, doi = {10.1553/etna_vol54s210}, }