Schumann, C (November 2002). “Medical, nutritional and technological properties of lactulose. An update.”. 《European journal of nutrition》. 41 Suppl 1: I17–25. doi:10.1007/s00394-002-1103-6. PMID12420112.
Schumann, C (November 2002). “Medical, nutritional and technological properties of lactulose. An update.”. 《European journal of nutrition》. 41 Suppl 1: I17–25. doi:10.1007/s00394-002-1103-6. PMID12420112.