| Auteur(s) | Willow, J. | 
| Jaar | 2017 | 
| Titel | Case study on forage plants of the heath bumblebee (Bombus jonellus) in southwest Iceland. Icelandic Agricultural Sciences, 30, pp.39-42. | 
| Auteur(s) | Willow, J. | 
| Jaar | 2017 | 
| Titel | Case study on forage plants of the heath bumblebee (Bombus jonellus) in southwest Iceland. Icelandic Agricultural Sciences, 30, pp.39-42. |