Gottlieb, Stephen E. Election Reform and Democratic Objectives: Match or Mismatch? Yale Law & Policy Review, Vol. 9, No. 2 (1991), pp. 205-235.
Footnote 12: “Historically the Constitution did not embody the right to instruct representatives how to vote in the legislature; many, however, continued to believe that representatives had a duty to obey constituents. Akhil Amar, Philadelphia Revisited: Amending the Constitution Outside Article V, 55 U. Cm. L. Rev. 1043, 1058-60 (1988) (discussing right of instruction; arguing that people retain right to replace or amend Constitution outside boundaries of Article V)” ) (207).