[أبو عبد الله عادل السلفي]

I've never heard of this two authors, but in the front cover of the book they wrote that the book has been reviewed by Ash-Sheikh Muhammad Al-Ameen Al-Haleel Abu Abdil Musawwir (A student of Shaikh Al-Albani), and I don't know this sheikh either.
I tryed to take a quick look at the book but unfortunately I couldn't find a PDF copy on the web

.