Callaway, R., Callaway, R., Engelhard, G., Dann, J., Cotter, J., & Rumohr, H. (2007). A century of North Sea epibenthos and trawling: Comparison between 1902-1912, 1982-1985 and 2000. Marine Ecology Progress Series, 346, pp. 27-43. doi:10.3354/meps07038

Callaway, Ruth, R. Callaway, GH Engelhard, J. Dann, J. Cotter, and H. Rumohr. "A Century of North Sea Epibenthos and Trawling: Comparison between 1902-1912, 1982-1985 and 2000." Marine Ecology Progress Series 346 (2007): 27-43.

Callaway, Ruth, et al. "A Century of North Sea Epibenthos and Trawling: Comparison between 1902-1912, 1982-1985 and 2000." Marine Ecology Progress Series 346 (2007): 27-43.