Lewis SJ, Heaton KW (1997). «Stool form scale as a useful guide to intestinal transit time». Scand. J. Gastroenterol. 32 (9): 920–4. PMID9299672. doi:10.3109/00365529709011203
Hiele, M; Ghoos, Y; Rutgeerts, P; Vantrappen, G; Schoorens, D (1991). «Influence of nutritional substrates on the formation of volatiles by the fecal flora.». Gastroenterology. 100 (6): 1597-602. PMID2019366A referência emprega parâmetros obsoletos |coautor= (ajuda)
Tangerman, A (15 de outubro de 2009). «Measurement and biological significance of the volatile sulfur compounds hydrogen sulfide, methanethiol and dimethyl sulfide in various biological matrices.». Journal of chromatography. B, Analytical technologies in the biomedical and life sciences. 877 (28): 3366-77. PMID19505855
Chavez, C; Coufal, CD; Carey, JB; Lacey, RE; Beier, RC; Zahn, JA (2004). «The impact of supplemental dietary methionine sources on volatile compound concentrations in broiler excreta.». Poultry science. 83 (6): 901-10. PMID15206616A referência emprega parâmetros obsoletos |coautor= (ajuda)
Geypens, B; Claus, D; Evenepoel, P; Hiele, M; Maes, B; Peeters, M; Rutgeerts, P; Ghoos, Y (1997). «Influence of dietary protein supplements on the formation of bacterial metabolites in the colon.». Gut. 41 (1): 70-6. PMID9274475A referência emprega parâmetros obsoletos |coautor= (ajuda)
Otto, ER; Yokoyama, M; Hengemuehle, S; von Bermuth, RD; van Kempen, T; Trottier, NL (2003). «Ammonia, volatile fatty acids, phenolics, and odor offensiveness in manure from growing pigs fed diets reduced in protein concentration.». Journal of animal science. 81 (7): 1754-63. PMID12854812A referência emprega parâmetros obsoletos |coautor= (ajuda)
Lewis SJ, Heaton KW (1997). «Stool form scale as a useful guide to intestinal transit time». Scand. J. Gastroenterol. 32 (9): 920–4. PMID9299672. doi:10.3109/00365529709011203
