![138331](https://sdvigpress.org/images/creator/_default.jpg)
References
Roberto Pinotti
Confinement in space: the human dimension![Open Access Link](images/OAlink.png)
1988
in: Frontiers and space conquest / frontières et conquête spatiale, Dordrecht : Springer
![Open Access Link](images/OAlink.png)
The "high frontier" concept in perspective![Open Access Link](images/OAlink.png)
1988
in: Frontiers and space conquest / frontières et conquête spatiale, Dordrecht : Springer
![Open Access Link](images/OAlink.png)