1. Calundann, G. W. (Celanese), US Pat. 4 067 852 (1978)
2. Calundann, G. W., Davis, H. L., Gorman, F. J. and Mininni, R. M. (Celanese), US Pat. 4 083 829 (1978)
3. Calundann, G. W. (Celanese), US Pat. 4 184 996 (1980)
4. Calundann, G. W. (Celanese), US Pat. 4 130 545 (1978)
5. Thermotropic Anthraquinone Polymers: Structure and Enthalpic Relaxation