The novel is considered a classic of science fiction by the following works of reference: Annick Beguin, Les 100 principaux titres de la science-fiction, Cosmos 2000, 1981 ; Science-fiction.
Romanul este considerat un clasic al literaturii științifico-fantastice de următoarele lucrări de referință: Annick Beguin, Les 100 principaux titres de la science-fiction, Cosmos 2000, 1981 ; Science-fiction.