1. R. N. Nurmukhametov, Pogloshchenie i lyuminestsentsiya aromaticheskikh soedinenii [Absorption and Luminescence of Aromatic Compounds], Khimiya, Moscow, 1971, 216 (in Russian).
2. E. N. Shepelenko, V. A. Bren’, I. L. Minkin, Khim. Geterotsikl. Soedin., 1989, 5, 591 [Chem. Heterocycl. Compd. (Engl. Transl.), 1989, 5].
3. D. K. Smith, J. Chem. Educ., 2005, 82, 393.
4. V. F. Traven, V. S. Miroshnikov, A. S. Pavlov, I. V. Ivanov, A. V. Panov, T. A. Chibisova, Mendeleev Commun., 2007, 17, 88.
5. A. V. Manaev, T. A. Chibisova, V. F. Traven, Izv. Akad. Nauk, Ser. Khim., 2006, 2144 [Russ. Chem. Bull., Int. Ed., 2006, 55, 2226].