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2. Mer og bedre grovfôr som basis for norsk kjøtt- og mjølkeproduksjon. Resultater fra flerårige høstetidsforsøk i blandingseng med timotei, engsvingel og rødkløver (More and better forage as a basis for Norwegian meat and milk production. Results from multi-annnual harvesting time trials in mixed meadows of timothy, meadow fescue and red clover);Bakken;Bioforsk Rapport,2009
3. Foraging behaviour and site selection of barnacle geese Branta leucopsis in a traditional and newly colonised spring staging habitat;Black;Ardea,1991
4. Pay-offs and penalties of competing migratory schedules;Drent;Oikos,2003
5. Foraging routines and estimated daily food intake in barnacle geese wintering in the northern Netherlands;Ebbinge;Wildfowl,1975