Novak, K., Enkelmann, V., Köhler, W., Wegner, G., & Wagener, K. B. (1994). HOMOGENEOUS PHOTODIMERIZATION AND THERMAL BACK-REACTION OF A STYRYLPYRYLIUM TRIFLATE. Molecular Crystals and Liquid Crystals Science and Technology Section A-Molecular Crystals and Liquid Crystals, 242, 1-8. doi:10.1080/10587259408037734.