Merkys, Vytautas. “About the Publication of ‘the Russian-Lithuanian Calendar’ for 1873-1876 ”. Knygotyra 22, no. 15-1 (December 28, 1988): 68–71. Accessed October 24, 2025. https://test.zurnalai.vu.lt/knygotyra/article/view/36542.