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Ahmed, B. T., M. C. Ramon, and L. de Haro y Ariet,  "On the capacity and interference statistics of street W-CDMA cross-shaped micro cells in Manhattan environment (uplink analysis)",  Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual, vol. 1, pp. 107-111 vol.1, April, 2003.

Ahmed, B. T., M. C. Ramon, and de. Haro L Ariet,  "On the capacity of air-ground W-CDMA system (downlink analysis)",  Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual, vol. 1, pp. 103-106 vol.1, April, 2003.