1. SLS, the Gateway, and a lunar outpost in the early 2030s;Haws,2019
2. NASA's lunar orbital platform-gatway;Gill,2018
3. The Artemis Lunar Program;von Ehrenfried,2020
4. Overview of key technologies and on-orbit verification of China space station;Hao;Aero. China,2022
5. Beyond the ISS: the world's first commercial space station;Maender,2022