The Original Meaning of Omission: the Tenth Amendment, Popular Sovereignty, and "Expressly" Delegated Power, by Kurt Lash, Professor of Law and W. Joseph Ford Fellow, Loyola Law School, Los Angeles, Notre Dame Law Review, 2008. 
Plenary Power and Constitutional
Outcasts: Federal Power, Critical Race Theory, and the Second, Ninth, and Tenth
Amendments, by Nicholas J. Johnson.