Complex sentence: A number of key studies of authenteō have been undertaken over the last 30 years, some of which have involved comprehensive searches of the largest available databases of Greek literature, Thesaurus Linguae Graecae, and the Duke Databank of Documentary Papyri.
Split into simpler sentences: A number of key studies of authenteō have been undertaken over the last 30 years. Such studies typically involve comprehensive searches of the largest available databases of Greek literature, Thesaurus Linguae Graecae, and the Duke Databank of Documentary Papyri.