S. Gohain, D. Prajapati, J.S. Sandhu A New and Efficient Method for the Selective Reduction of Nitroarenes: Use of Ammonium Sulphate-Sodium Borohydride //Chem. Lett. Vol. 24 (1995) , No. 8 p.725
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http://dx.doi.org/10.1246/cl.1995.725