""" In addition to Lem, Dick named three other sci-fi figures associated with him as in on the plot – Peter Fitting, Fredric Jameson and Franz Rottensteiner (also Lem’s literary agent in the West). """

I've never heard of the other two, but Fredric Jameson was a well-known literary critic. I gather that he did write about science fiction, and certainly he was a Marxist, but was he really a "sci-fi figure"?