I can't add any books, because Ruy kinda covered it, but are you familiar with the Aerodrome website?
http://www.theaerodrome.com/
It's not completely Jasta 11, but there's some good material there for research. Also check their reference section for more links -
http://www.theaerodrome.com/links/in...=list&cat_id=9
And there's Frontflieger - it's in German, but I seem to remember there being some English parts of it.
http://www.frontflieger.de/
HTH,
Cori