[1] The Global System for Mobile Communications, 1993.
[2] Réseaux GSM-DCS, 5th ed., Hermès, 2001 (available in French only).
[3] 3GPP TS 05.05 Radio Transmission and Reception (R99).
[4] 3GPP TS 05.01 Physical Layer on the Radio Path; General Description (R99).