1. The mechanism of the renal excretion of oxalate in the dog;Cattell, W.R.; Spencer, A.G.; Taylor, G.W.; Watts, R.W.E.;Clin. Sci,1962
2. Estimation of urinary oxalate by the method of isotope dilution;Dean, B.M.; Griffin, W.J.;Nature (Lond.),1965
3. Gibbs, D. A., Thompson, C. J., and Watts, R. W. E. (1967).
4. Plasma and urinary amino acids in children with primary hyperoxaluria and in normal children;Watts, R.W.E.;Arch. Dis. Childh; An investigation of the possible role of xanthine oxidase in the oxidation of glyoxylate to oxalate,1966
5. Peters, J. P., and Van Slyke, D. D. (1932). Quantitative Clinical Chemistry, Vol. 2, p. 602. Williams and Wilkins, Baltimore.