IohZatArt Articuli Johannis de Zacz, ed. K. Höfler, Geschichtschreiber II (FRA ser. I, vol. VI/2), Wien 1865, pag. 824–827. s. XV in. heresis latissima plena idolatria, que dicit Cristum substancialiter et corporaliter secundum naturale corpus, quo in celo d-abiliter residet, esse in sacramento altaris IohZatArt 824