1. Minkin, V.I., Usp. Khim., 2013, vol. 82, no. 1, pp. 1–26.
2. Bertelson, R.C., in: Organic Photochromic and Thermochromic Compounds, Crano, J.C. and Guglielmetti, R.J., Eds., New York: Plenum, 1999, vol. 1, pp. 11–83.
3. Minkin, V.I., in: Molecular Switches, Feringa, B.L. and Browne, W.R., Eds., Weinheim: Wiley, 2011, vol. 1, pp. 37–80.
4. Guglielmetti, R., in: Photochromism: Molecules and Systems, Dürr, H. and Bouas-Laurent, H., Eds., Amsterdam: Elsevier, 1990, pp. 314–466.
5. Traven’, V.F., Manaev, A.V., Bochkov, A.Yu., Chibisova, T.A., and Ivanov, I.V., Izv. Akad. Nauk, Ser. Khim., 2012, no. 7, pp. 1327–1348.