Are there any good statistics books for poker...probabilities, etc.?

[Scorpius]

I am somewhere between beginner and intermediate player. Really like Omaha/8. Would like to know if anyone knows of any good books that get into poker statistics in depth, probabilities and how to calculate them, etc. Please post if you know of any. Thanks.

[LINES]

Supersytem 1 And 2 by Doyle Bruson
Mike Petriv's "Hold'em Odds Book"
Catalin Barboianu's "Texas Hold'em Odds"
David Sklansky's "Theory Of Poker"