Saviščevas, E. Copies of Letters from Lithuanian Rulers, Beginning With Vytautas and Jogaila in an Excerpt from the 1575 Brest Castle Court Records, Reflecting a Dispute over the Newly Drawn Borders Between the Grand Duchy of Lithuania and Poland Following the Union of Lublin. LIS 2026, 57, 107-115. https://doi.org/10.15388/LIS.2026.57.7.