Over the years, I have read this book at least four times in its entirety and most of its sections individually countless times for my research on my thesis. I will surely keep coming back to it as it is quite an intense book to both read and evaluate on. Dickmann analyzes the concept of the mise en abyme from various different perspectives and disciplines, and brings forth many critical issues, most of which are always hinted at, but were never fully discussed in detail before. In this book, you will find numerous critical, literary, and philosophical works quoted and discussed in relation to the mise en abyme.
It is not easy to read this book if you possess zero knowledge on the mise en abyme. Although Dickmann starts his discussion from the emergence of the mise en abyme, it is a theoretical and critical evaluation of the already developed concepts related to the phenomenon. If you have no prior experience with the topic, I would highly suggest going back to the beginnings of it. To follow its literary development, start from André Gide's first account of his technique of "en abyme", and then follow the formation process of the theory. Some of the most important names to read, in this order (at least for the first four names), are: Claude-Edmonde Magny, Jean Ricardou, Lucien Dällenbach, Mieke Bal, Linda Hutcheon, Moshe Ron, Brian McHale, and Werner Wolf. Of course, there are many more influential names discussed in Dickmann's book, on whose work you may have to do some research as you read about them.
Overall, without spoiling it much (which, I know, is ridiculous to say about an academic work), I would definitely recommend this book to those who want to dive deep into the vast pool of relations related to the phenomenon of mise en abyme.