"aim is to provide an overview over those lesbian photographers that took pictures of lesbians, and .. to discuss their photography in relation to the time in which they worked"
D. Zühlke. Nutzergerechte Entwicklung von Mensch-Maschine-Systemen: Useware-Engineering für technische Systeme, chapter 7, Springer, Berlin, 2 edition, (2012)
A. Garc\'ıa Frey, G. Calvary, and S. Dupuy-Chessa. Proceedings of the 2nd ACM SIGCHI Symposium on Engineering Interactive Computing Systems (EICS '10), Berlin, Germany, page 41-46. New York, ACM, (2010)
A. Garc\'ıa Frey, G. Calvary, and S. Dupuy-Chessa. Proceedings of the 2Nd ACM SIGCHI Symposium on Engineering Interactive Computing Systems, page 41--46. New York, NY, USA, ACM, (2010)