1. Factors affecting occurrence patterns of seabirds in the northern California Current, spring and summer 2000;Ainley;Deep Sea Research part II,2005
2. The birds of the Western Palearctic on interactive DVD-ROM 1.00;Birds of the Western Palearctic interactive,2004
3. Bird communities at sea off California: 1975 to 1983;Briggs;Studies in Avian Biology,1987
4. The role of velvet scoters Melanitta fusca for pursuit-diving seabirds in winter;Byrkjedal;Ornis Norvegica,2000