Lower Germanic Limes

California Press, 1990, p.19-24 (en) Wolfram, Herwig, The Roman Empire and Its Germanic Peoples. University of California Press, 1997 (en) Herwig Wolfram, History

Kalefeld » (voir la liste des auteurs). Meyer M. et al. The C3rd AD Romano-Germanic battlefield at Harzhorn near Kalefeld, Landkreis Northeim in Roman Frontier