a report by Berndt Welz ; production ZDF, Alexandre Kegler, Sigrid Beck ; production DOCUVista, Gilbert Schwab ; programme producer, Martin Ordolff ; produced by DOCUVista Filmproduktion on behalf of ZDF
a film by Louis Saul ; written and directed by Louis Saul ; production, Alexandre Kegler, Sigrid Beck ; a production of Weitwinkelmedia on behalf of ZDF
a film by Andreas Ewels, Norbert Porta ; written by Andreas Ewels, Norbert Porta ; production ZDF, Alexandre Kegler, Sigrid Beck ; produced by Norbert Porta Sciencedocu on behalf of ZDF
a report by Claus Schenk ; written and directed by Claus Schenk ; production, Alexandre Kegler, Sigrid Beck ; produced by CapricornFilm on behalf of ZDF
written and directed by Bernd Reufels, Ioanna Engel ; production Kelvinfilm, Jutta Erlebach ; production ZDF, Alexandre Kegler, Sigrid Beck ; produced by Kelvinfilm
written and directed by Andreas Ewels, Norbert Porta ; production ZDF, Alexandre Kegler, Sigrid Beck ; produced by Norbert Porta Sciencedocu on behalf of ZDF