1. Accumulation by birds: human impact upon North Sea birds;Bourne,1988
2. Birds killed in the Torrey canyon disaster;Bourne;Nature,1967
3. Beached bird surveys indicate decline in chronic oil pollution in the North Sea;Camphuysen;Marine Pollution Bulletin,1998
4. Camphuysen, C.J., 2003. North Sea Pilot Project on Ecological Quality Objectives, Issue 4. Seabirds, EcoQO Element F. Proportion of Oiled Common Guillemots Among Those Found Dead or Dying. CSR Report 2004-011, Texel, p. 26.
5. Camphuysen, C.J., 2005. Oiled-guillemot-EcoQO – Implementation Document. North Sea Pilot Project on Ecological Quality Objectives, Issue 4. Seabirds, EcoQO element (f). NIOZ Report, Royal Netherlands Institute for Sea Research, Texel.