Dictionary of the Khazars (Male Edition) - Milorad Pavić, Christina Pribichevich-Zoric
Just started reading it again, inspired by both the cover of the French reedition coming out this October (gorgeous!) and by Lea Silhol's hieratically beautiful short story featuring the Khazars and their relationship to religions, "La Faveur de la Nuit" (in [b:Avant l'Hiver, Architectonique des Clartés|26158113|Avant l'Hiver, Architectonique des Clartés|Léa Silhol|https://d.gr-assets.com/books/1440432542s/26158113.jpg|3514127]).
Brava to Le Nouvel Attila for this reedition!