1. Neavel, R. C. in ‘Coal Structure’, (Eds. M. L. Gorbaty and K. Ouchi), Adv. Chem. Ser. No. 192, Am. Chem. Soc., Washington DC, Chap. 1
2. A data base for the analysis of compositional characteristics of coal seams and macerals;Davis;Quarterly Technical Progress Report,1980
3. Applied Infrared Spectroscopy;Friedel,1966
4. THE APPLICATION OF SPECTROSCOPIC TECHNIQUES TO THE STRUCTURAL ANALYSIS OF COAL AND PETROLEUM