title: Comment on "Hawking radiation, Unruh radiation, and the equivalence principle".
authors.affiliation: Faculdade de Física, Universidade Federal do Pará, 66075-110 Belém, PA, Brazil. crispino@ufpa.br
authors.forename: Luís C B
authors.initials: LC
authors.lastname: Crispino
authors.forename: Atsushi
authors.initials: A
authors.lastname: Higuchi
authors.forename: George E A
authors.initials: GE
authors.lastname: Matsas