EJB books and tutorials

Greetings,
Can one recommend me some books on EJB and some tutorials on EJB ?
Thanks!

EJB: Enterprise Javabeans 3.0 (O'Reilly, isbn 975-0-596-00978-6)
JPA: Pro EJB 3 - Java Persistence API (Apress, isbn 978-1-59059-645-6)
These are the best two books I have read so far.

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