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Partially supported by NSF Grant MCS77-15 524 (USA), Ecole Polytechnique (France) and Kyoto University (Japan).
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Lê Dũng, T., Saito, K. The localΠ 1 of the complement of a hypersurface with normal crossings in codimension 1 is abelianof the complement of a hypersurface with normal crossings in codimension 1 is abelian. Ark. Mat. 22, 1–24 (1984). https://doi.org/10.1007/BF02384367
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DOI: https://doi.org/10.1007/BF02384367