1. Pulp and Paper 42, ?18th Annual World Review? (1968).
2. and : Constitution and Biosynthesis of Lignin, Springer, Berlin 1968.
3. and : Lignins. Wiley-Interscience, New York 1971.
4. : The Chemistry of Lignin. Academic Press, New York 1952;
5. and : The Chemistry of Lignin, Supplement Volume. Academic Press, New York 1960