Williams, B.J. & Droge, M.H. & Leonard, R.B. (1984)
Intracellular recording from pectoral fin motoneurons of the stingray Dasyatis sabina, an elasmobranch fish. Journal of Neurophysiology, 51(4), 666–679

Droge, M.H. & Leonard, R.B. (1983)
Organization of spinal motor nuclei in the stingray, Dasyatis sabina. Brain Research, 276(2), 201–211
DOI: 10.1016/0006-8993(83)90727-8

Williams, B.J. & Droge, M.H. & Hester, K. & Leonard, R.B. (1981)
Induction of swimming in the high spinal stingray by L-DOPA. Brain Research, 220(1), 208–213
DOI: 10.1016/0006-8993(81)90228-6