(Cognitivist accounts developed with Strong, or a variant of it, are  found in Harman 1976, 1986; Velleman 1989, 2007; Setiya 2007; Broome  2009; and Archer 2018.  Earlier defenses of Strong can be found in Hampshire and Hart  1958 and Grice 1971.  Wallace 2006 develops a cognitivist account with  Medium, and Binkley 1965 does so with Weak.)