1. Ruffini, S., Johansson, M., Pohlman, B., Sandgren, M.: 5G syncronization requirements and solutions. Ericsson Technol. Rev. (2021). https://www.ericsson.com/en/reports-and-papers/ericsson-technology-review/articles/5g-synchronization-requirements-and-solutions
2. The ROOT (Rolling Out OSNMA for the Secure Synchronisation of Telecom Networks) Project. https://www.gnss-root.eu/
3. ITU-T Recommendations G.826x and G.827x series (G.8200-G.8299: Synchronization, quality and availability targets. https://www.itu.int/ITU-T/recommendations/index_sg.aspx?sg=15
4. IEEE 1588-2019: IEEE Standard for a Precision Clock Synchronization Protocol for Networked Measurement and Control Systems. Accessed 16 Jun 2020. https://standards.ieee.org/standard/1588-2019.html
5. Mills, D., Delaware, U., Martin, J., Burbank, J., Kasch, W.: Network Time Protocol Version 4: Protocol and Algorithms Specification. IETF RFC 5905 (2010)