“NEW SYNTHESIS OF NH$_2$/NH$_2$ CAPPED POLYANILINE TETRAMERS 4,4’-DI(p-AMINOANILINO)-DIPHENYLAMINE”, Proc. YSU B: Chem. Biol. Sci., vol. 47, no. 1 (230), pp. 7–12, Mar. 2013, doi: 10.46991/PYSUB.2013.47.1.007.