Structure of 3,4-dihydroxy-1,6-diphenyl-2,4-hexadiene- 1,6-dione (I) and its 1,6-di-p-tolyl analogue (II),

B. Kaitner, G. Jovanovski, I. Janev, Structure of 3,4-dihydroxy-1,6-diphenyl-2,4-hexadiene- 1,6-dione (I) and its 1,6-di-p-tolyl analogue (II), Acta Crystallographica, C48, 127– 129 (1992).