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?

Context paragraphs:
A Matter of Chance: A Matter of Chance is a short story by Vladimir Nabokov written in Russian under his pen name Vladimir Sirin in Berlin in 1924.  It was rejected by the newspaper "Rul" and first published by the emigre magazine "Segodnya" in Riga.  In 1974 it became part of a collection of thirteen stories called "Tyrants Destroyed and Other Stories" published by McGraw-Hill.

Janet Kagan: Janet Kagan (born Janet Megson, April 18, 1946 – February 29, 2008) was an author of two science fiction novels and two science fiction collections, plus numerous science fiction and fantasy short stories that appeared in publications such as "Analog Science Fiction and Fact" and "Asimov's Science Fiction".  Her story "The Nutcracker Coup" was nominated for both the Hugo Award for Best Novelette and the Nebula Award for Best Novelette, winning the Hugo.

The Return of Chorb: "The Return of Chorb" is a short story by Vladimir Nabokov written in Russian under his pen name Vladimir Sirin in Berlin in 1925.  In 1929 it became part of a collection of fifteen short stories and twenty-four poems also called The Return of Chorb (Russian: "Vozvrashchenie Chorba") in Russian by "V. Sirin".

The Gift (Nabokov novel): The Gift (Russian: Дар, "Dar" ; ISBN  ) is Vladimir Nabokov's final Russian novel, and is considered to be his farewell to the world he was leaving behind.  Nabokov wrote it between 1935 and 1937 while living in Berlin, and it was published in serial form under his nom de plume, Vladimir Sirin.

Devil to the Belt: Devil to the Belt is an omnibus release from 2000 containing two science fiction novels by American writer C. J. Cherryh, Heavy Time (1991), and Hellburner (1992).  They are set in Cherryh's Alliance-Union universe and are prequels to her Hugo Award–winning 1981 novel "Downbelow Station".  Both of the included works were nominated for the Locus Award for Best Science Fiction Novel in their respective years of eligibility.  The novels and the omnibus printing were published by Warner Books, with some editions bearing the "Questar Science Fiction" or "Warner Aspect" imprints.  Cherryh self-published e-book editions of "Heavy Time" and "Hellburner" in 2009 at Closed Circle Publications.

Ilium (novel): Ilium is a science fiction novel by American writer Dan Simmons, the first part of the "Ilium/Olympos" cycle, concerning the re-creation of the events in the "Iliad" on an alternate Earth and Mars.  These events are set in motion by beings who have taken on the roles of the Greek gods.  Like Simmons' earlier series, the Hyperion Cantos, the novel is a form of "literary science fiction" which relies heavily on intertextuality, in this case with Homer and Shakespeare, as well as periodic references to Marcel Proust's "À la recherche du temps perdu" (or "In Search of Lost Time") and Vladimir Nabokov's novel "".  In July 2004, "Ilium" received a Locus Award for best science fiction novel of 2004.

Vladimir Nabokov: Vladimir Vladimirovich Nabokov ( ; Russian: Влади́мир Влади́мирович Набо́ков , ] , also known by the pen name Vladimir Sirin; (April 22nd, 1899 — July 2nd, 1977) was a Russian-American novelist and entomologist.  His first nine novels were in Russian, but he achieved international prominence after he began writing English prose.

Details of a Sunset: Details of a Sunset is a short story by Vladimir Nabokov written in Russian under his pen name Vladimir Sirin in Berlin in 1924.

King, Queen, Knave: King, Queen, Knave is a novel written by Vladimir Nabokov (under his pen name V. Sirin), while living in Berlin and sojourning at resorts in the Baltic in 1928.  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.

Ilium/Olympos: Ilium/Olympos is a series of two science fiction novels by Dan Simmons.  The events are set in motion by beings who have taken on the roles of the Greek gods.  Like Simmons' earlier series, the Hyperion Cantos, it is a form of "literary science fiction"; it relies heavily on intertextuality, in this case with Homer and Shakespeare as well as references to Marcel Proust's "À la recherche du temps perdu" (or "In Search of Lost Time") and Vladimir Nabokov's novel "".

Supporting paragraphs: Ilium/Olympos Vladimir Nabokov
Answer: Dan Simmons