1. NASA’s Optical Communications Program for 2015 and Beyond;Cornwell,2015
2. Alphasat and sentinel 1A, the first 100 links
3. European Data Relay System - Operational Service Using Optical Communications Technology;Hauschildt,2015
4. An Overview of NASA’s Latest Efforts in Near Earth Optical Communications;Edwords,2015
5. JAXA's optical data relay satellite programme