http://ah.milua.org/books.htm В основном по австрийцам.
Вот какие книги Вы там найдете:
Christopher Chant.
Austro-Hungerian Aces of World War I. - Aircraft of the Aces 46, Osprey Publishing, 2002.
Hugh W. Cowin.
German and Austrian Aviation of World War I. - Aviation Pioneers, Osprey Publishing, 2000
Windsock Phoenix D.I - D.II
Jan Zahalka, Mgr. Petr Aharon Tesar, Zdenek Skolil.
Aviatik D.I & D.II. - JaPo, 2002.
PKZ 2: WWI Austro-Hungarian Helicopter. - Windsock Mini Datafile 2
Kenneth Munson.
Bombers 1914-19: Patrol and Reconnaissance Aircraft. - Blanford Colour Series, Dorset, 1968
Kenneth Munson.
Fighters 1914-19: Attak and Training Aircraft. - Blanford Colour Series, Dorset, 1968.
Joachim Dressel, Manfred Grehl.
Deutche Fessel- und Sperrballone 1900-1945. - Waffen-Arsenal Band 149, 1994