7ETSI. GSM 07.05 (Version 5.5. 0) : Digital Cellular Telecommunications System(Phase 2+) ; Use of Data Terminal Equipment-Data Circuit terminating Equipment (DTE-DCE) Interface for Short Message Service (SMS) and Cell Broadcast Service (CBS)[S]. ETSI. 1998. 1.
8Lars PetterssorL SMS Messages and the PDU Format[EB/OL]. www. dreamfabric. com/sms.