Korchmina, Elena; Fedyukin, Igor (2019). „Extralegal payments to state officials in Russia, 1750s–1830s: Assessing the burden of corruption”. The Economic History Review. 72: 156—181. ISSN1468-0289. doi:10.1111/ehr.12666.
Korchmina, Elena; Fedyukin, Igor (2019). „Extralegal payments to state officials in Russia, 1750s–1830s: Assessing the burden of corruption”. The Economic History Review. 72: 156—181. ISSN1468-0289. doi:10.1111/ehr.12666.