1. Social organization and foraging ecology in the arctic skua Stercorarius parasiticus: a test of the food defendability hypothesis;Andersson;Oikos,1980
2. Arcos, J.M., Bécares, J., Villero, D., Brotons, L., Rodríguez, B., Ruiz, A., this issue. Assessing the location and stability of hotspots for pelagic seabirds: an approach to identify marine Important Bird Areas (IBAs) in Spain. Biological Conservation. doi:10.1016/j.biocon.2011.12.011.
3. Introduction: fisheries, past, present and future;Beddington;Philosophical Transactions of the Royal Society London B,2005
4. BirdLife International, 2000. The Development of Boundary Selection Criteria for the Extension of Breeding Seabird Special Protection Areas into the Marine Environment. OSPAR Convention for the Protection of the Marine Environment of the North-East Atlantic. Meeting of the Biodiversity Committee (BDC) Vlissingen (Flushing), 20–24 November, 2000, Agenda Item 8.
5. BirdLife International, 2010a. Marine Important Bird Areas Toolkit: Standardised Techniques for Identifying Priority Sites for the Conservation of Seabirds At-Sea. BirdLife International, Cambridge, UK. Version 1.1, May 2010.