Klovas, Mindaugas. “Verification Measures of a Private Document in the Grand Duchy of Lithuania in the End of 14th C.–15th C”. Lietuvos istorijos studijos 35 (August 4, 2015): 24–39. Accessed August 29, 2026. https://journals.vu.lt/lietuvos-istorijos-studijos/article/view/8354.