The editors of the journal "Archiwariusz Zamojski" use the anti-plagiarism program https://www.crossref.org/services/similarity-check/ using iThenticate (http://www.ithenticate.com/) software belonging to Turnitin. The program allows you to examine the similarity of the text sent to the editorial office of "Archiwariusz Zamojski" with articles deposited by publishers using Similarity Check and with Internet sources.