Matey, V. & Wood, C.M. & Dowd, W.W. & Kültz, D. & Walsh, P.J. (2009)
Morphology of the rectal gland of the spiny dogfish (Squalus acanthias) shark in response to feeding. Canadian Journal of Zoology, 87(5), 440–452
DOI: 10.1139/Z09-030