1. Hermans, P. H. 1949.‘Physics and Chemistry of Cellulose Fibres’29–35. New York: Elsevier.
2. 1955.Cellulose and Cellulose Derivatives249–251. New York: Interscience Inc.
3. 1943.Cellulose and Cellulose Derivatives999–1001. New York: Interscience Inc.
4. Hermans, P. H. 1949.‘Physics and Chemistry of Cellulose Fibres’315New York: Elsevier.
5. Hermans, P. H.‘Physics and Chemistry of Cellulose Fibres’381New York: Elsevier.