1. INVESTIGATION OF SYNERGIC/ANTI-SYNERGIC INTERACTIONS OF DIHYDROXIFUMARIC ACID AND ASCORBIC ACID WITH DPPH. Authors: GHEORGHE DUCA, CLAUDIA CIMPOIU, CRINA VICOL.2. DFT STUDY OF GEOMETRIC ISOMERIZATION AND KETO–ENOL TAUTOMERIZATION OF DIHYDROXYFUMARIC ACID. Authors: NATALIA BOLOCAN, GHEORGHE DUCA.