found: Falkner, Gerhard. Bekennerschreiben, 2017:title page (Constantin Lieb)
found: Fabian, oder Der Gang vor die Hunde, 2021:title frame (Drehbuch, Constantin Lieb)
found: IMDb, June 6, 2022(Constantin Lieb, screenwriter; active in film and television since about 2018)
found: Filmportal.de, page for Constantin Lieb, via WWW, June 6, 2022(Constantin Lieb, screenwriter, producer; born in 1987 in Lichtenfels, Germany; studied philosophy, German literature and applied literature in Berlin; in 2008 founded the cinephile online magazine Cine-fils; also editor of Gerhard Falkner's poetry; active as a screenwriter since about 2014; collaborator with Dominik Graf on the screenplay of Fabian, oder Der Gang vor die Hunde, adapted from Erich Kästner's novel)