Orchestral maneuver in the dark.

Very good book of original science fiction.Idée, original universe, particular language, once started reading it is hard to let go of the book.
Descendants of a couple of earthlings trying to survive on a planet, the problem this planet has no star is permanent darkness, life is possible there thanks to the pervasive geothermal, life s 'is développée.Les humans try to survive, most are carriers of physical or mental defects due to inbreeding.
The story is compelling, it closes the book with regret.Une result was published in England, I am anxious.