Prebiotic potential of yacon (Smallanthus sonchifolius) tuber extract / S. C. Sousa ... [et al.]. Pediatria. International probiotic conference : probiotics for the 3rd millennium : june 4th-7th 2008 Hotel Bellevue High Tatras Slovakia Roč. 3, č. S3, suplement - abstrakty (2008), s. 53 S