Question: What is the name of the author who wrote a series of two science fiction novels, about beings who have taken on the roles of the Greek gods, which makes references to a novel written by a Russian author known by the pen name Vladimir Sirin?
Sentence (from "King, Queen, Knave"): It was published as "Король, дама, валет (Korol', dama, valet)" in Russian in October of that year; the novel was translated into English by the author's son Dmitri Nabokov (with significant changes made by the author) in 1968, forty years after its Russian debut.
Relevant evidence: No