Launois, Aimee. "Estampilles et poids faibles en verre Omedyyades et Abbassides au Musee Arabe du Caire, "Melanges Islamogiques 3 (1975) 126, Rogers, Edward Thomas. "Glass, As a Material for Standard Coin Weights," NC N.S. 13 (1873). p.72, no. 83
Launois, Aimee. "Estampilles et poids faibles en verre Omedyyades et Abbassides au Musee Arabe du Caire, "Melanges Islamogiques 3 (1975), Rogers, Edward Thomas. "Glass, As a Material for Standard Coin Weights," NC N.S. 13 (1873)., p.72, no.85