1. Ultrasonic study on complex glass system doped with erbium oxide. Issue 4 (11th February 2016) Authors: Eid, Ahmed M.; Farag, Mohamed A.; Abd-ullah Abd El-Rahman, Khaled; El-Okr, Mohamed M. Journal: Journal of materials research Issue: Volume 31:Issue 4(2016) Page Start: 495 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗