1. E. Parnell and Longmans, “Life and Labours of John Mercer,” Green & Co., London, 1886 (through ref 6).
2. H. Sobue and N. Migita, Ed., “Cellulose Handbook (in Japanese),” Asakura-Shoten, Tokyo, 1958.
3. H. Staudinger and R. Mohr, J. Pract. Chem., 158, 233 (1941).
4. H. Mark, J. Phys. Chem., 44, 764 (1940).
5. P. Hermans, J. Phys. Chem., 45, 827 (1941).