PageRank Algorithm Expert

I am looking for someone who has a thorough understanding of the PageRank algorithm. This means you have studied the original papers of Brin/Page and you have created computer models to determine PageRank.

You should have a thorough understanding of the effects on PageRank of Dangling Pages, NoFollow links, External Links, etc.

Important: We will only consider applicants who are able to demonstrate their understanding of PageRank by answering the following question.

Consider a closed system of 4 web pages: A, B, C, D.

Page A links to pages B, C, and D
Page B links to pages C, and D
Page C links to page D
Page D links to page A

Using a damping factor of .85 and an initial PageRank of 1.0 for each page, what is the computed PageRank of each of the 4 pages in this system (to 4 decimal places)?