Variational Principles in Dynamics and Quantum Theory Dover Book

Reality Is Not What It Seems: The Journey to Quantum Gravity by Carlo Rovelli...

Quantum Gravity an Oxford Symposium by Roger Penrose, Dennis Sciama & C.J. Isham

Covariant Loop Quantum Gravity: An Elementary Introduction to Quantum Gravit...

Out of Nowhere: The Emergence of Spacetime in Theories of Quantum Gravity

Quantum Dynamics for Classical Systems: With Applications of the Number Operator

Canonical Gravity: From Classical to Quantum: Proceedings of the 117th WE Herae

Covariant Loop Quantum Gravity: An Elementary Introduction to Quantum Gravity an