1. Banaszczyk, W.: On the existence of exotic Banach-Lie groups. To appear in Math. Ann.
2. Banaszczyk, W.: Closed subgroups of nuclear spaces are weakly closed. To appear in Studia Math.
3. Pietsch, A.: Operator ideals. Amsterdam: North-Holland 1980
4. Rolewicz, S.: Metric linear spaces. Warszawa: PWN-Polish Scientific Publishers 1972
5. Santalo, L.A.: Un invariante afin para los cuerpos convexos de espacio den dimensiones. Portug. Math.8, 155?161, (1949)