Jambres the magicians, exists in some Greek fragments present in the Chester Beatty Papyri No XVI (which has been edited and translated by Albert Pietersma)...

Manichaeism Mani at the Court of the Persian Kings: Studies on the Chester Beatty Kephalaia Codex Iain Gardner, Jason D. BeDuhn, Paul Dilley ISBN 978-90-04-23470-3...