Circadian patterns and 24-h total hydrogen and methane excretion in humans ingesting nonstarch polysaccharide (NSP) diets and the implications for indirect calorimetric and D2 18O methodologies.

Poppitt S. D., Livesey G., Faulks R. M., Roe M., Prentice A. M., Elia M.. (1996)

European Journal of Clinical Nutrition, 50, 524-534