Svenja, Alex and Wolfgang appear in text and photos in the book Gladiator: The Roman Fighters (Unofficial) Manual by Philip Matyszak.
Medusa's review of the book 'Gladiator - Rome's bloody spectacle' for Ancient Warfare magazine, Vol. IV, Issue 1, page 54
Medusa's review of the new Junkelmann book on gladiators for Ancient Warfare magazine, Vol. II, Issue 3, page 47