USOSKY, V. “CONVERSION TO THE STANDARD OF GOLD MONOMETALLISM IN THE ECONOMY OF THE RUSSIAN EMPIRE AND S. VITTE’S MONETARY REFORM (1856 – 1857)”. Vestnik of Polotsk State University. Part D. Economic and Legal Sciences, no. 5, Apr. 2013, pp. 63-76, https://journals.psu.by/economics/article/view/9048.