André Melzer Sebastian Hasse Oliver Jeskulke Inga Schön Michael Herczeg The Interactive and Multi-protagonist Film: A Hypermovie on DVD. 193-203 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3166&spage=193 2004 conf/iwec/2004 ICEC db/conf/iwec/icec2004.html#MelzerHJSH04