1. Bryce JRG. In: Casey JP, editor, Pulp and paper chemistry and chemical technology. 3rd ed., vol. I. New York: John Wiley and Sons, 1980, pp. 377–492.
2. Grace TM. In: Hough G, editor. Chemical recovery in alkaline pulping processes. Atlanta: TAPPI Press, 1985.
3. Adams TN, Frederick WJ. Kraft recovery boiler physical and chemical processes. New York: American Paper Institute, 1988.
4. Lien SJ, Nichols KM. IPST Tech. Pap. Ser. No. 445, 1992.