Microscopic and spectroscopic studies of pottery found in the Prague groschen hoard from the area of Wałbrzych : confirming compatibility between the ceramic vessels and the coins - Miazga, Beata; Milejski, Paweł; Rodak, Sylwia; Rafalska-Łasocha, Alicja (Institute of History, University of Tartu, 2019)