LENE)-4,4,4',4'-TETRAMETHYL-2,2'-BITHIOLANYLIDENE, A COMPOUND CONTAINING THE FUNDAMENTAL CHROMOPHORE OF THIOINDIGO - (E Z) AND VALENCE ISOMERS, THERMOCHROMISM AND PHOTOCHROMISM/
A. Pawlik et al., LENE)-4,4,4',4'-TETRAMETHYL-2,2'-BITHIOLANYLIDENE, A COMPOUND CONTAINING THE FUNDAMENTAL CHROMOPHORE OF THIOINDIGO - (E Z) AND VALENCE ISOMERS, THERMOCHROMISM AND PHOTOCHROMISM/, Angewandte Chemie, International Edition in English, 33(19), 1994, pp. 1966-1969