Littman, R. (1993). "An error in the Menetekel inscription in Rembrandt's "Belshazzar's Feast"". Oud Holland. 107 (3): 296–7. doi:10.1163/187501793X00036. Specifically, the final character (at the bottom of the leftmost row) is shown as a ז (zayin) instead of a final ן (nun).
Hausherr, R. (1963). "Zur Menetekel-Inschrift auf Rembrandts Belsazarbild". Oud Holland. 78: 142–9. doi:10.1163/187501763X00101.