1. A Theoretical and Statistical Dilemma: The Contributions of Burns, Mitchell and Frickey to Business Cycle Theory;Ames;Econometrica,1948
2. Measuring Business Cycles;Burns,1946
3. Frickey, Burns and Mitchell and the Transport-Building Cycle;Isard;Rev. Econom. Stud.,1950
4. Scientific Papers of Tjalllling C. Koopmans,1970
5. The Theory and Measurement of Demand;Schultz,1941