Webjournal Necessary Fiction asked Jürgen for “research notes” for the writing of Kino. Jürgen writes:
I quickly realized that research was both a blessing and a trap: unlike an academic paper, a novel shouldn’t show off the amount of work that went into it. You want just enough verisimilitude to let readers know they’re in good hands, without constantly reminding them that much of what you’re offering is second-hand knowledge — that you’ve never actually lived in Weimar Berlin, that you weren’t there when Fritz Lang filmed Die Nibelungen, that you’ve never danced at the Kleist Casino either, that the book is made up. It’s a fine line.
You can read the post, complete with a bibliography for Kino, at Necessary Fiction.