| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| General X-Efficiency Theory & Economic Development | 978-0-19-502380-0 | 1978 | |
| Inflation, Income Distribution and X-Efficiency Theory | 978-0-06-494169-3 | 1980 | |
| Inflation, Income Distribution and X-efficiency Theory | 978-0-7099-0306-2 | 1980 | |
| Journal of Development Planning | 978-92-1-104296-2 | 1988 | Dennis Ray |
HarperCollins · Oxford University Press · Routledge · United Nations