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VOLUME 47 (1988) | ISSUE 4 |
PAGE 181
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Two-loop contribution to the four-point function in superstring theory
Morozov A.
A prototype two-loop contribution to a four-point function, which satisfies the requirements of module invariance and finiteness, is constructed. A study of the factorization properties of the expressions proposed here may prove sufficient for an unambiguous determination of the correct result.
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