Brill, Robert H., and Nicholas D. Cahill. "A Red Opaque Glass from Sardis and Some Thoughts on Red Opaques in General." Journal of Glass Studies 30 (1988): 16-27.

Brill, Robert H., and Nicholas D. Cahill. "A Red Opaque Glass from Sardis and Some Thoughts on Red Opaques in General." Journal of Glass Studies 30 (1988): 16-27.