1. Kimberlin, C. N., Jr., Ellert, H. G., Adams, C. E. and Hammer, G. P. US Pat. 3 203 892, April 19, 1963
2. Adams, C. E., Hammer, G. P. and Kimberlin, C. N. Jr. US Pat. 3 245 909, February 28, 1962
3. New method for elucidating the structures of coal
4. Aromatic ring oxidation of alkylbenzenes