@unpublished{SikoraYunitasariDold2013,
  author  = {Axel Sikora and Amalia Yunitasari and Martin Dold},
  title   = {GPRS and UMTS services for ultra low energy M2M-communication},
  institution = {Fakult{\"a}t Elektrotechnik und Informationstechnik (E+I) (bis 03/2019)},
  year    = {2013},
  language  = {en}
}