Taha-Ahmed, B., J. L. Masa-Campos, and J. M. Lalueza-Mayordomo,  "Propagation Path Loss and Materials Insertion Loss in Indoor Environment at WiMAX Band of 3.3 to 3.6 GHz",  Wireless Personal Communication, vol. 66, no. 2, pp. 251 - 260, Sep., 2012.

Taha-Ahmed, B., J. L. Masa-Campos, and J. A. Ruiz-Cruz,  "Impact of Ultra Wide Band emission on WiMAX systems at 2.5 and 3.5 GHz",  Computer Networks, vol. 54, no. 10, pp. 1573 - 1583, Jul., 2010.

Ahmed, B. T., and M. C. Ramon,  "WiMAX in high altitude platforms (HAPs) communications over large cities",  Systems, Signals and Devices, 2009. SSD '09. 6th International Multi-Conference on, pp. 1-4, March, 2009.

Ahmed, B. T.,  "WiMAX in High Altitude Platforms (HAPs) Communications",  Wireless Technology, 2006. The 9th European Conference on, pp. 245-248, Sept, 2006.