Alba Regia. Annales Musei Stephani Regis. – Alba Regia. Az István Király Múzeum Évkönyve. 20. 1980 – Szent István Király Múzeum közleményei: C sorozat (1983)

Tanulmányok – Abhandlungen - Pogány Lajos: Compar ative Measurement of Ancient Ceramics using the Scanning Elektron Microscope and Energy Dispersive X-ray Microanalysis. p. 181–184.

Figure 3: Fragment from a Siegburg type vessel, sample three from Sopron. Spectra are taken from the glazed side (upper spectrum) and clay side (lower spectrum). The spectra show a different chemical composition from those of figures one and two. (The calcium peak does not exist here.) This component is missing from both the glazed and clay surfaces. 184