220. Pärt, P., Wood, C.M., Gilmour, K.M., Perry, S.F., Laurent, P., Zadunaisky, J., and Walsh, P.J. (1999) Urea and water permeability in the ureotelic gulf toadfish (Opsanus beta). J. Exp. Zool. 283 pp: 1-12. (PDF)
220. Pärt, P., Wood, C.M., Gilmour, K.M., Perry, S.F., Laurent, P., Zadunaisky, J., and Walsh, P.J. (1999) Urea and water permeability in the ureotelic gulf toadfish (Opsanus beta). J. Exp. Zool. 283 pp: 1-12. (PDF)