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Hettler, MH and Mukherjee, M and Jarrell, M and Krishnamurthy, HR (2000) Dynamical cluster approximation: Nonlocal dynamics of correlated electron systems. In: Physical Review B: Condensed Matter, 61 (19). pp. 12739-12756.
Hettler, MH and Tahvildar-Zadeh, AN and Jarrell, M and Pruschke, T and Krishnamurthy, HR (1998) Nonlocal dynamical correlations of strongly interacting electron systems. In: Physical Review B: Condensed Matter and Materials Physics, 58 (12). R7475-R7479.