| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Three Essays on Productivity : The Impacts of Profitability, Business Cycles and the Capital Stock on Productivity : 4 | 978-1-138-86107-7 (1-138-86107-3) | 2015 |
| Three Essays on Productivity : The Impacts of Profitability, Business Cycles and the Capital Stock on Productivity | 978-1-138-88628-5 (1-138-88628-9) | 2016 |
| Three Essays on Productivity: The Impacts of Profitability, Business Cycles and the Capital Stock on Productivity | 978-0-8153-1622-0 (0-8153-1622-4) | 1994 |