1. A glossary of AATCC standard terminology;AATCC Technical Manual,2000
2. Lockhart GR. Manufacture of rayon. US 1865701; July 5, 1932.
3. Ruesch R, Schmidt H. Preparation of dyed filaments and films. US 2043069; June 2, 1936.
4. I.G. Farbenindustrie A.-G. Process for the manufacture of dyed filaments and films. GB 448447; June 8, 1936.
5. I.G. Farbenindustrie A.-G. The manufacture of dyed artificial masses from regenerated cellulose. GB 465606; May 10, 1937.