Ursula K. Le Guin on Lathe of Heaven as PKD homage

Le Guin: Oh yeah, definitely. You know, I couldn’t write a Phil Dick book, but I could steal some of his tricks, in a way. Pulling reality out from under the reader all the time, changing reality on them, the way he does. Well, I did it through dreams. Phil would have done it another way. But yeah, homage to Phil Dick is right.
Geek's Guide to the Galaxy Interview