Publications in 1939
- Technische Ontwikkeling en Werkgelegenheid (Book)
- On a Method of Statistical Business-Cycle Research; a reply (to Keynes) (Article)
- Econometric Business Cycle Research (Article)
- Henri Schultz: In Memoriam (Article)
- Het Werkloosheidsrapport van de Commissie Van der Waerden: een verweer (Article)
- Henri Schultz’ Levenswerk: statistische bepaling van vraagcurve (Article)
- Statistical Testing of Business Cycle Theories: Part I: A Method and Its Application to Investment Activity (Book)
- Statistical Testing of Business Cycle Theories: Part II: Business Cycles in the United States of America, 1919-1932 (Book)
- A Simplified Model of the Causation of Technological Unemployment (Article)
- The Dynamics of Share-Price Formation (Article)
