| Issue Date | Title | Author(s) | Type | Access |
| Nov-2012 | Analysis of effective efficiency in decision making for irrigation interventions | Haie, Naim; Pereira, Rui M. S.; Machado, Gaspar J., et al. | Article | Restricted access (UMinho) |
| Aug-2008 | Effective efficiency as a tool for sustainable water resources management | Haie, Naim; Keller, Andrew A. | Article | Restricted access (UMinho) |
| 2011 | Effective efficiency in water resources management using efficiency elasticity index | Haie, Naim; Machado, Gaspar J.; Pereira, Rui M. S., et al. | Article | Restricted access (UMinho) |
| Jan-2014 | Macro, meso, and micro-efficiencies and terminologies in water resources management: a look at urban and agricultural differences | Haie, Naim; Keller, Andrew A. | Article | Restricted access (UMinho) |
| Apr-2012 | Macro, meso, and micro-efficiencies in water resources management : a new framework using water balance | Haie, Naim; Keller, Andrew A. | Article | Restricted access (UMinho) |
