Lawlor, Leonard: This is not sufficient: an essay on animality and human nature in Derrida. New York 2007. Internet: https://books.google.de/books?id=UCKtAgAAQBAJ&printsec=frontcover&dq=This+is+not+sufficient.+An+Essay+on+Animality+and+Human+Nature+in+Derrida.&hl=en&sa=X&ved=0ahUKEwjSuMqz4J7TAhWEuBoKHfNYCLgQ6AEIJDAA#v=onepage&q&f=false.