CHEMERYNSKYJ, Andriy. “PHILATELIC GIFTS TO HALICH – ON THE OCCASION OF THE INDEPENDENCE DAY OF UKRAINE AND 650th ANNIVERSARY FROM THE TIME OF SUBMISSION MAGDEBURG LAW”. Halych. Scientific Work Collection , vol. 3, Sept. 2018, pp. 284-5, https://journals.pnu.edu.ua/index.php/hal_swc/article/view/7764.