RACZKOWSKI, Juliusz and BUCŁAW, Katarzyna. The Unknown Processional Banner from the Heritage of Diocese of Chełmno in the Collection of the Diocesan Museum in Toruń. Acta Universitatis Nicolai Copernici [Heritage Studies and Conservation Science]. Online. 27 January 2023. Vol. 53, pp. 277-318. [Accessed 5 July 2025]. DOI 10.12775/AUNC_ZiK.2022.007.