| ID | Reference |
|---|---|
| Bremner-Harrison et al, 2004 | Bremner-Harrison S., Prodohl P.A., Elwood R.W., (2004) Behavioural trait assessment as a release criterion: Boldness predicts early death in a reintroduction programme of captive-bred swift fox (Vulpes velox), Animal Conservation 7: 313-320 |