@Article{ authors = " Bartosz Klusek, Per Andersen, Mia Münster-Swendsen", title = ""Custom. The Development and Use of a Legal Concept in the Middle Ages, Proceeding of the Fifth Carlsberg Academy Conference on Medieval Legal History 2008", ed. Per Andersen, Mia Münster-Swendsen, Kopenhaga 2009 : [recenzja] / Bartosz Klusek.", journal = "Res Historica", issue = "2011 / Tom 31", pages = "289 - 292" }