Kulka, D.W. & Orlov, A.M. & Barker, A.S. (2009)
Amblyraja jenseni IUCN 2012, IUCN Red List of Threatened Species, Version 2012.2, https://www.iucnredlist.org

Sulikowski, J.A. & Kulka, D.W. & Gedamke, T. & Barker, A.S. (2009)
Malacoraja senta IUCN 2012, IUCN Red List of Threatened Species, Version 2012.2, https://www.iucnredlist.org

Orlov, A.M. & Kulka, D.W. & Barker, A.S. & Stehmann, M. (2009)
Rajella bigelowi IUCN 2012, IUCN Red List of Threatened Species, Version 2012.2, https://www.iucnredlist.org

Kulka, D.W. & Barker, A.S. & Orlov, A.M. & Pasolini, P. (2009)
Rajella fyllae IUCN 2012, IUCN Red List of Threatened Species, Version 2012.2, https://www.iucnredlist.org

Kulka, D.W. & Barker, A.S. & Pasolini, P. & Orlov, A.M. (2007)
Amblyraja hyperborea IUCN 2012, IUCN Red List of Threatened Species, Version 2012.2, https://www.iucnredlist.org

Kulka, D.W. & Orlov, A.M. & Barker, A.S. (2007)
Bathyraja richardsoni IUCN 2012, IUCN Red List of Threatened Species, Version 2012.2, https://www.iucnredlist.org

Barker, A.S. (2006)
Rhinoptera bonasus IUCN 2012, IUCN Red List of Threatened Species, Version 2012.2, https://www.iucnredlist.org

Barker, A.S. & Heupel, M.R. & Motta, P.J. & Hueter, R.E. (2004)
Movement patterns of the Cownose Ray within Charlotte Harbor, Florida: A preliminary assessment [Abstract]. American Elasmobranch Society 20th Annual Meeting, Norman, Oklahoma