Wow, thanks everyone. Yeah, I put suggestions up on Osprey's site about book ideas for the Italian Wars of Independence a few months ago, but I don't know if they were accepted. But I will definitely check out those books recommended.
You are right. It is a collection of some issues of "Rivista Militare". It is expensive but the quality of the book and the pitures are just terrific!
I got my copy via "mareganum.com" - a web-side of Italian bookshops. Maybe you can find it there.