Rashkovsky, A. (2013) Iz perepiski E.D. Petryaeva i Pavla Mikhaylovicha Arbuzova i vyderzhek iz rukopisey P.M. Arbuzova [From the correspond- dence of E.D. Petryaev and Pavel Mikhailovich Arbuzov and excerpts from P.M. Arbuzov's manuscripts]. Topos. 25th April. [Online] Available from: http://www.topos.ru/article/zhizn-kak-est/lyubopytnye-podrobnosti-zhizni-v-vyatskom-krae (Accessed: 5th July 2019).
Arbuzov, P. (n.d.) Metod nauchnogo sinkretizma (Materialisticheskiy sinkreticheskiy metod skhvatyvaniya) [Method of scientific syncretism (Materialistic syncretic method of grasping)]. The St. Petersburg Branch of the Archive of the Russian Academy of Sciences (SPF ARAN). Fund 800. List 3. File 4.
Kruger, J. & Dunning, D. (1999) Unskilled and Unaware of It: How Difficulties in Recognizing One's Own Incompetence Lead to Inflated Self-Assessments. Journal of Personality and Social Psychology. 77(6). pp. 1121-1134. DOI: 10.1037/0022-3514.77.6.1121
Leyfert, L. (1930) Matematika i dialekticheskiy materializm [Mathematics and dialectical materialism]. Leningradskiy universitet. 4-5(57-58).
15th December. pp. 2.