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References
Leszek M. Sokołowski
Quantum spacetime and the problem of time in quantum gravity![Open Access Link](images/OAlink.png)
2002
in: A collection of Polish works on philosophical problems of time and spacetime, Dordrecht : Springer
![Open Access Link](images/OAlink.png)
2002
in: A collection of Polish works on philosophical problems of time and spacetime, Dordrecht : Springer