1. 5G Automotive Association. https://5gaa.org/. 5G Automotive Association. https://5gaa.org/.
2. LTE-Advanced Is the Real 4G . http://spectrum.ieee.org/telecom/standards/lte-advanced-is-the-real-4g. LTE-Advanced Is the Real 4G . http://spectrum.ieee.org/telecom/standards/lte-advanced-is-the-real-4g.
3. The MobileBroadband LTE-Advanced Standard . http://www.3gpp.org/technologies/keywords-acronyms/97-lte-advanced. The MobileBroadband LTE-Advanced Standard . http://www.3gpp.org/technologies/keywords-acronyms/97-lte-advanced.
4. The MobileBroadband LTE Standard . http://www.3gpp.org/technologies/keywords-acronyms/98-lte. The MobileBroadband LTE Standard . http://www.3gpp.org/technologies/keywords-acronyms/98-lte.
5. LTE-direct Trial Whitepaper . https://www.qualcomm.com/media/documents/files/lte-direct-trial-whitepaper.pdf. LTE-direct Trial Whitepaper . https://www.qualcomm.com/media/documents/files/lte-direct-trial-whitepaper.pdf.