The first critical edition, based on five manuscripts, appeared in 1851 as Liber Henoch, Aethiopice, ad quinque codicum fidem editus, cum variis lectionibus, by August Dillmann. It was followed in 1853 by a German translation of the book by the same author with commentary titled Das Buch Henoch, übersetzt und erklärt. It was considered the standard edition of 1 Enoch until the work of Charles.[citation needed]