Further Black library books

Picked Krieg up whilst in my local Warhammer Shop and have just finished it, Krieg (What a book!) and about to start Siege of Vraks (Just received today). I am now a massive fan of the Krieg!

Are there any other books about the Death Korps?

Also looking at starting a Krieg army as I love the lore so far (probably looking at 500 points to start off with) Any advice would be helpful!

Thankyou.