References
Hans Ekstein
(1984)., Is physical space unique or optional?, in R. S. Cohen & M. W. Wartofsky (eds.), Physical sciences and history of physics, Dordrecht, Springer, pp. 57-74.
(1984)., Is physical space unique or optional?, in R. S. Cohen & M. W. Wartofsky (eds.), Physical sciences and history of physics, Dordrecht, Springer, pp. 57-74.