Ha, D.S. & Grubbs, R.D. & Cotton, C.F. & Musick, J.A. (2009)
Shark CPUE Trends from Virginia's Atlantic Waters: Trends 1972-2008 [Abstract]. American Elasmobranch Society 25th Annual Meeting, 23–27 July 2009, Portland, OR

Ha, D.S. & Luer, C. & Sulikowski, J.A. (2009)
Raja eglanteria IUCN 2012, IUCN Red List of Threatened Species, Version 2012.2, https://www.iucnredlist.org

Grubbs, R.D. & Ha, D.S. (2006)
Gymnura micrura IUCN 2012, IUCN Red List of Threatened Species, Version 2012.2, https://www.iucnredlist.org

Ha, D.S. & Musick, J.A. (2005)
Insights from analysis of 30 years of Virginia shark long-line survey data [Abstract]. American Elasmobranch Society 21th Annual Meeting, Tampa, Florida

Musick, J.A. & Harbin, M.M. & Berkeley, S.A. & Burgess, G.H. & Eklund, A.M. & Findley, L. & Gilmore, R.G. & Golden, J.T. & Ha, D.S. & Huntsman, G.R. & Mcgovern, J.C. & Sedberry, G.R. & Parker, S.J. & Poss, S.G. & Sala, E. & Schmidt, T.W. & Weeks, H. & Wright, S.G. (2000)
Marine, Estuarine, and Diadromous Fish Stocks at Risk of Extinction in North America (Exclusive of Pacific Salmonids). Fisheries, 25(11), 6–30
DOI: 10.1577/1548-8446(2000)025<0006:MEADFS>2.0.CO;2