Citation analysis is one measure of an article’s influence in the legal community. The Michigan Law Review has published an article, written by two librarians, titled: The Most-Cited Law Review Articles of All Time. The data collected includes the 100 most-cited legal articles. Here’s the top 10 list:

1. R.H. Coase, The Problem of Social Cost, 3 J.L. & Econ. 1 (1960).
2. Samuel D. Warren & Louis D. Brandeis, The Right to Privacy, 4 Harv. L. Rev.
   193 (1890).
3. O.W. Holmes, The Path of the Law, 10 Harv. L. Rev. 457 (1897).  
4. Gerald Gunther, The Supreme Court, 1971 Term—Foreword: In Search of Evolving Doctrine on a Changing Court: A Model for a Newer Equal Protection, 86 Harv. L. Rev. 1 (1972).
5. Herbert Wechsler, Toward Neutral Principles of Constitutional Law, 73 Harv. L.
   Rev. 1 (1959).
6. Guido Calabresi & A. Douglas Melamed, Property Rules, Liability Rules, and
   Inalienability: One View of the Cathedral, 85 Harv. L. Rev. 1089 (1972). 
7. Charles A. Reich, The New Property, 73 Yale L.J . 733 (1964).  
8. Charles R. Lawrence III, The Id, the Ego, and Equal Protection: Reckoning with
   Unconscious Racism, 39 Stan. L. Rev. 317 (1987).
9. William J. Brennan, Jr., State Constitutions and the Protection of Individual
   Rights, 90 Harv. L. Rev. 489 (1977). 
10.  Robert H. Bork, Neutral Principles and Some First Amendment Problems, 47 Ind. L.J. 1 (1971).