PakCat catalogue record GSM architecture, protocols and services By J诲g Ebersp衣her ... [et al.] Bibliographic details ISBN0470030704 PublisherWiley Publication placeChichester, U.K. Publication year2009 Edition3rd ed., English lang. ed. Material typeReference book Physical descriptionix, 326 p. Additional authorsEbersp衣her, J. SubjectsGlobal system for mobile communications.