 Among the more important discussions of the de re / de dicto distinction are Quine (1956), Kaplan (1968), Burge (1977), Lewis (1979), Stich (1983), Dennett (1987), Crimmins (1992), Brandom (1994), Jeshion (2002), Taylor (2002), and Keshet (2010). See also the section on the De Re/De Dicto Distinction in the entry on  propositional attitude reports.