Bekenstein: Black holes and the second law, Lett.Nuovo Cim. 4 (1972) 737-740
Bekenstein: Black holes and entropy, Phys.Rev.D 7 (1973) 2333-2346
Hawking: Black hole explosions?, Nature 248 (1974) 30–31
Hawking: Particle creation by black holes, Commun. Math. Phys. 43 (1975) 199–220
Gibbons, Hawking: Action Integrals and Partition Functions in Quantum Gravity, Phys.Rev.D 15 (1977) 2752-2756
York: Black hole thermodynamics and the Euclidean Einstein action, Phys. Rev. D 33 (1986) 2092–2099.
Wald: Black hole entropy is the Noether charge, Phys. Rev. D 48 (1993) R3427–R3431
Jacobson: Thermodynamics of spacetime: The Einstein equation of state, Phys. Rev. Lett. 75 (1995) 1260–1263
Hawking, Page, Thermodynamics of black holes in anti-de Sitter space, Commun. Math. Phys. 87 (4) (1983) 577
Hawking: Breakdown of predictability in gravitational collapse, Phys. Rev. D 14 (1976) 2460–2473
Brown, York: Quasilocal energy and conserved charges derived from the gravitational action, Phys.Rev.D 47 (1993) 1407-1419
General references:
Witten: Introduction to Black Hole Thermodynamics, Eur.Phys.J.Plus 140 (2025) 5, 430, ArXiv: 2412.16795
Jacobson: Introductory Lectures on Black Hole Thermodynamics
Starobinsky: A new type of isotropic cosmological models without singularity, Phys. Lett. B 91 (1980) 99–102
Guth: The Inflationary Universe: A Possible Solution to the Horizon and Flatness Problems, Phys.Rev.D 23 (1981) 347-356
Linde: A new inflationary universe scenario: A possible solution of the horizon, flatness, homogeneity, isotropy and primordial monopole problems, Phys. Lett. B 108 (1982) 389–393.