1. The Chemist;Kwolek;Am. Inst. Chem.,1980
2. Kwolek SL, US Patent Office, Pat No 3 819 587, 1974.
3. Synthesis, Anisotropic Solutions, and Fibers of Poly(1,4-benzamide)
4. Kwolek SL, US Patent Office, Pat No 3 671 542, 1972, Pat No 3 819 587, 1974.
5. Blades H, US Patent Office, Pat No 3 767 756, 1973.