↑ Helmore, Edward (16 December 2007). "Home porn provides sector the blues". ↑ "P20th Century Nudes in Art". ↑ Michael Achenbach, Paolo Caneppele, Ernst Kieninger: Projektionen der Sehnsucht: Saturn, die erotischen Anfänge der österreichischen Kinematografie. ↑ Bottomore, Stephen (1996). Stephen Herbert and Luke McKernan eds. ↑ Bottomore, Stephen (1996). Stephen Herbert and Luke McKernan (eds.). ↑ Morris, Chris.