I need a book recomendation

[r3vbr]

I'm interested in a good book on valuation. One wich goes deep into the subject, I don't need theories and concepts, I want techniques with all the math involved.

Also I want a fairly new book, cause all the education I've had so far was from reading the inteligent investor and security analysis, in wich they discuss stocks from 1950 and such.

thx