2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/35585A unified description is presented of the physical observables and thermodynamic variables associated with black hole solutions in generic 2-D dilaton gravity. The Dirac quantization of these theories is reviewed and an intriguing relationship between the entropy of the black hole and the WKB phase of the corresponding physical wave functionals is revealed.16 pages, latex, no figuresGeneral Relativity and Quantum Cosmologytext