M. A. Keegstra; A. J. A. Klomp; L. Brandsma
Convenient Synthetic Procedures for 2-Bromofuran and 2,5-Dibromofuran
Synthetic Communications, Volume 20, Issue 21 December 1990 , pages 3371 - 3374
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http://dx.doi.org/10.1080/00397919008051573