He explicitly quotes Eliezer, e.g.:

Most cryonicists have a hunch that you can survive cryopreservation intact (cryonicist Eliezer Yudkowsky argues that “successful cryonics preserves anything about you that is preserved by going to sleep at night and waking up the next morning”) but they also admit that this is yet another variable they’re not sure about. You might even want to consider this a fifth “If” to add onto our list: If what seems to be a revived me is actually me…

and also mentions at the end that he noticed Eliezer's writings commonly turn out to have something in common with what he wants to write about.