1. Adamar, J. (1970) Investigation of the psychology of the invention process in the field of mathematics. Moscow: Sov. Radio.
2. Aksyutina I. V., & Shuklina, Y. A. (2014). Problems of forming creative activity in teaching mathematics in the practice of school training. Primo Aspectu, 19(24) (151), 183-185.
3. Aksyutina, I. V., & Shuklina, Y. A. (2013) Forming creative activity in teaching mathematics with using illustrative and practical works. Engineering and construction bulletin of the Caspian Region, 2(3-6), 77-79.
4. Artemov, A. K. (1973). On heuristic methods for teaching geometry in school. Mathematics in school, 6, 25-29.
5. Azarova, T. G. (2012). Entertaining tasks as a means of forming creative activity of junior schoolchildren in teaching mathematics. Works of Young Scientists of Altai State University, 9, 304-306.