Greek, published by Esoptron (Έσοπτρον), a mainstream Greek publisher. English and German translations have also been published recently (2012) by Arktos, the current incarnation of the publisher previously noted in this blog (post here) under its former name, Integral Tradition Publishing.
All these books are available on Amazon, which makes it possible to see what other authors some of Dugin's readers are buying. Unsurprisingly, one finds Julius Evola, Alain de Benoist, and Guillaume Faye. There is also a new addition, Markus Willinger, whose Generation Identity: A Declaration of War against the 68ers is also published by Arktos. Willinger is a young (born 1992) Austrian, a reader of Evola and de Benoist and Faye, whose book contains forty short chapters on topics such as identity, loneliness, religion, ecology, death, sexuality, ethnopluralism, and the Zeitgeist. Chapter 41 is his "declaration of war."
Another book that Dugin's Amazon US readers are buying is Jack Donovan's exploration of masculinity, The Way of Men. But then a lot of people are buying Donovan at present.