1 November 2020 will mark the 70th anniversary of the dogmatising
of the Bodily Assumption of Mary as a de fide dogma in Roman
Catholicism. Due to such, I think it is apropos to plug one of my
favourite books, not just on the topic of the Dormition and Assumption, but
Mariology as a whole:
The book is pretty expensive, even as a paperback on Amazon.
However, at the time of writing, it appears that they are working on a relatively inexpensive Kindle version.
On the Assumption itself, see, for e.g., Refuting Taylor Marshall on the Bodily Assumption of Mary