Further Reading
- Ashtekar, Abhay (1986). "New Variables for Classical and Quantum Gravity". Physical Review Letters 57 (18): 2244–2247. Bibcode 1986PhRvL..57.2244A. doi:10.1103/PhysRevLett.57.2244. PMID 10033673.
Read more about this topic: Ashtekar Variables
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