H, A., M. M. El-Tonsy, and A. A. jalil. A. Shumis. “Degradation of Glass Polymers Due to Successive Exposure to Acid Rain and UV Radiation”.
JOURNAL OF ADVANCES IN PHYSICS
, vol. 11, no. 2, Nov. 2015, pp. 2979-8, doi:10.24297/jap.v11i2.530.