Wood, C.M. & Munger, R.S. & Thompson, J. & Shuttleworth, T.J. (2007)
Control of rectal gland secretion by blood acid-base status in the intact dogfish shark (Squalus acanthias). Respiratory Physiology & Neurobiology, 156(2), 220–228
DOI: 10.1016/j.resp.2006.09.003

Shuttleworth, T.J. & Thompson, J. & Munger, R.S. & Wood, C.M. (2006)
A critical analysis of carbonic anhydrase function, respiratory gas exchange, and the acid-base control of secretion in the rectal gland of Squalus acanthias. Journal of Experimental Biology, 209(23), 4701–4716
DOI: 10.1242/jeb.02564

Coates, M. & Thompson, J. & Tate, M.E. (1979)
Isolation of O-Phosphorylethanolamine from the Erythrocytes of an Elasmobranch (the Southern Fiddler Rav - Trygonorhina fasciata guanerius) Journal of Experimental Zoology, 210, 489–496
DOI: 10.1002/jez.1402100311

Coates, M. & Paton, B.C. & Thompson, J. (1978)
High levels of inosine monophosphate in the erythrocytes of elasmobranchs. Journal of Experimental Zoology, 203(2), 331–337
DOI: 10.1002/jez.1402030217