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GSM and UMTS - The Creation of Global Mobile Communications (John Wiley & Sons, Ltd., 2002)
F. Hillebrand (editor), Finn Trosby, Kevin Holley, Ian Harris (contributors)
Short Message Service - The Creation of Personal Global Text Messaging (John Wiley & Sons, Ltd., 2010)
F. Hillebrand
Die Pionierzeit des GSM-Standards und des D1-Netzes von 1982 bis 1992 (J. Schlembach, 2013)
F. Hillebrand (editor), Karl Heinz Rosenbrock, Hans Hauser
The Creation of Standards for Global Mobile Communication - GSM, UMTS and LTE from 1982 to 2012 (2013)
A suitable reader for Mac and PC can be downloaded 
 here
F. Hillebrand (editor), Karl Heinz Rosenbrock, Hans Hauser
The Creation of Standards for Global Mobile Communication - GSM, UMTS and LTE from 1982 to 2012 (2013)
(for Kindle readers only)
5G patent essentiality survey
The paper, co-authored by David Cooper, gives a detailed description of a recent 5G essentiality survey (commissioned by Ericsson) that estimates the proportion of patents declared to ETSI that actually are essential to the 5G smartphone. Compared with the results of a previous 4G survey, the fraction which was already small has fallen further. This matters because manufacturers need accurate knowledge about which patents they should licence. The ETSI database fails to provide this.