GOLUBOVICH, V. 2020. “‘IN THE PREPARATION OF REVERENCE’: UNKNOWN INSTRUCTIONS OF THE POLOTSK GENTRY AT THE SEJM OF THE POLISH-LITHUANIAN COMMONWEALTH IN 1639”. Vestnik of Polotsk State University. Part A. Humanities, no. 1 (March):45-50. https://journals.psu.by/humanities/article/view/1034.