Table 4 Band positions of crystalline and amorphous cellulose and the calculated parameters for the wood samples. I₂₀₀ is the maximum intensity of the crystalline cellulose, I_am is the minimum intensity of the crystalline cellulose, CrI is the crystalline index and L represents the crystallite size

From: In-depth studies on the modifying effects of natural ageing on the chemical structure of European spruce (Picea abies) and silver fir (Abies alba) woods