Ahmed, B. T., C. M Ramon, and de. Haro L Ariet,  "Capacity and interference statistics of highways W-CDMA cigar-shaped microcells (uplink analysis)",  Communications Letters, IEEE, vol. 6, no. 5, pp. 172-174, May, 2002.

Ahmed, B. T., M. C. Ramn, and de. Haro L Ariet,  "The overlay of intelligent FDSS system on N-CDMA system",  Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on, vol. 2, pp. 774-778 vol.2, Sept, 2002.