What is the author's style in Solaris by Stanislaw Lem?

Solaris is narrated in the first person from the point of view of Kris Kelvin, a psychologist who journeys to the planet Solaris in order to study it. Kelvin gives the perspective of an outsider arriving at the station in the midst of a mystery. The reader sees only what Kelvin sees, and so the reader is drawn into the mystery as small pieces of the puzzle are revealed.