I'd recommend Logos to include some of these titles by Martin Hengel:
- Judaism and Hellenism: Studies in Their Encounter in Palestine During the Early Hellenistic Period
- Four Gospels and the One Gospel of Jesus Christ: An Investigation of the Collection and Origin of the Canonical Gospels
- Jews, Greeks, and Barbarians: Aspects of the Hellenization of Judaism in the Pre-Christian Period
- The Zealots: Investigations into the Jewish Freedom Movement in the Period from Herod I until 70 A.D.
- The Charismatic Leader and His Followers
- Between Jesus and Paul: Studies in the Earliest History of Christianity
- Acts and the History of Earliest Christianity
- Crucifixion in the Ancient World and the Folly of the Message of the Cross
Given that Hengel was one of the most important biblical scholars of the last half century, I can't believe they aren't already available in Logos. "Judaism and Hellenism" for instance is absolutely crucial for everyone dealing with the era of the New Testament and early Christianity - you simply won't find anything more vital than this!
