author = {A. Zanella and M. Zorzi and A. Santos and P. Popovski and N. Pratas and Č. Stefanović and A. Dekorsy and C. Bockelmann, B. Busropan, T. Norp},
  year = {2013},
  month = {Dec},
  title = {M2M massive wireless access: challenges, research issues, and ways forward},
  address={Atlanta, USA},
  booktitle={Emerging Technologies for LTE-Advanced and Beyond-4G Workshop co-located with IEEE Globecom 2013}