T. Thiemann, and K. Giesel. (2023)cite arxiv:2303.18172Comment: 52 pages. This is a preprint of a chapter to appear in the "Handbook of Quantum Gravity", edited by Cosimo Bambi, Leonardo Modesto and Ilya Shapiro, 2023, Springer, reproduced with permission of Springer.
S. Deser, and A. Starobinsky. (2011)cite arxiv:1110.5941Comment: Introduction to translation of Bronstein's original 1935 paper as a "Golden oldie", JGRG, Jan 2012.
J. Donoghue. (2022)cite arxiv:2211.09902Comment: 27 Pages. Invited chapter for the Section "Effective Quantum Gravity" of the "Handbook of Quantum Gravity" (Eds. C. Bambi, L. Modesto and I.L. Shapiro, Springer Singapore, expected in 2023).