2003 | ||
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2 | Andrew Knyazev, Olof Widlund: Lavrentiev regularization + Ritz approximation = uniform finite element error estimates for differential equations with rough coefficients. Math. Comput. 72(241): 17-40 (2003) | |
1997 | ||
1 | Andrew Knyazev: New estimates for Ritz vectors. Math. Comput. 66(219): 985-995 (1997) |
1 | Olof Widlund | [2] |