1. V. M. Berestovitskaya, I. N. Tyurenkov, O. S. Vasil´eva, V. N. Perfilova, E. S. Ostroglyadov, V. V. Bagmetova, Ratsetams: metody sinteza i biologicheskaya aktivnost´. Monographiya [Racetams: Synthesis and Biological Activity. A Monograph], Asterion, St. Petersburg, 2016, 287 pp. (in Russian).
2. M. D. Mashkovskii, Lekarstvennye sredstva [Drugs], 16th ed., Novaya Volna, Moscow, 2012, 1216 pp. (in Russian).
3. Pat. GB 1039113; Chem. Abstrs, 1966, 65, 13672a.
4. V. G. Granik, Lekarstva (farmakologicheskii, biokhimicheskii i khimicheskii aspekty) [Medications (Pharmacological, Biochemical, and Chemical Aspects)], 2nd ed., Vuzovskaya kniga, Moscow, 2006, 149; 153; 360 (in Russian).
5. A. Malykh, M. Sadaie, Drugs, 2010, 70, 287.