1. Fernando Alvarez, Robert E. Lucas, Jr. and Warren E. Weber, “Interest Rates and Inflation”, Papers and Proceedings of the Hundred Thirteenth Annual Meeting of the American Economic Association, The American Economic Review, Vol. 91, No. 2 (American Economic Association, May, 2001), pp. 219–225.
2. Marco Bassetto, “Negative Nominal Interest Rates”, Papers and Proceedings of the One Hundred Sixteenth Annual Meeting of the American Economic Association, San Diego, CA, January 3-5, 2004, The American Economic Review, Vol. 94, No. 2 (American Economic Association, May, 2004), pp. 104–108.
3. D.B. Berg, A.G. Shelomentsev, O.I. Khatmullina, A. Taubayev, “Negative Interest Rates Policy, Economic Crisis and Environmental Management”, Proceedings of the 16th International Multidisciplinary Scientific GeoConference SGEM2016, Book 5, Vol. 3, (STEF92 Technology Ltd., Bulgaria, 2016), pp. 389–396.
4. Overcoming the Zero Bound on Nominal interest Rates with Negative Interest on Currency: Gesell's Solution
5. Dmitriy A. Kreptsev, Aleksey S. Porshakov, Sergey M. Seleznev, Andrey A. Sinyakov, “The equilibrium in-terest rate: estimation for Russia”, Economic research working papers series. Central Bank of Russian Federation, № 13 (July 2016), Available at http://www.cbr.ru.