New Book: Covariant Loop Quantum Gravity: An Elementary Introduction to Quantum Gravity and Spinfoam Theory (Cambridge Monographs on Mathematical Physics) by C. Rovelli and F. Vidottoby hyperspace_bot2014/11/142014/11/28
Quantum Gravity: the first 25 years. Read the focus section published in Classical and Quantum Gravity.by Adam Day2011/07/05