A chapter in the book: The Black Hole Information Paradox
Alejandro Perez and Sami wrote a chapterchapter:
Planckian Discreteness and the Resolution of the BH Information Puzzle
https://link.springer.com/chapter/10.1007/978-981-96-6170-1_14
in the following book: :
https://link.springer.com/chapter/book/10.1007/978-981-96-6170-1_141
Alejandro: