J. R.  Heidel, Nowak, B. F., Fischer, K. A., Watral, V. G., and Kent, M. L., 
“Visceral nodular cartilaginous metaplasia in rockfishes (Sebastes spp.) in the eastern North Pacific Ocean.”, 
Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc, vol. 14, no. 6, pp. 495-7, 2002.
 J. R.  Heidel, Nowak, B. F., Fischer, K. A., Watral, V. G., and Kent, M. L., 
“Visceral nodular cartilaginous metaplasia in rockfishes (Sebastes spp.) in the eastern North Pacific Ocean.”, 
J Vet Diagn Invest, vol. 14, no. 6, pp. 495-7, 2002.