On the 1830s change in the Russian name of the Russian language and its causes, see: Tomasz Kamusella. 2012. The Change of the Name of the Russian Language in Russian from Rossiiskii to Russkii: Did Politics Have Anything to Do with It?(pp 73-96). Acta Slavica Iaponica. Vol 32, http://src-h.slav.hokudai.ac.jp/publictn/acta/32/04Kamusella.pdf