Philipp Gittler, Mirko Javurek, Robert Kickinger, Johann Lehner,
"Ventilation Systems for Steel Works"
, in Fluent News, 1999, Kickinger Robert, Gittler Philipp, Javurek Mirko, Lehner Johann: Ventilation Systems for Steel Works, Fluent News Vol. 8, Iss. 2 (Fall 1999/Winter 2000)