@article{RuehlSczechLandesetal.2004,
  author    = {Ralph R{\"u}hl and Ronny Sczech and Nico Landes and Paul Thomas Pfluger and Dirk Kluth and Florian J. Schweigert},
  title     = {Carotenoids and their metabolites are naturally occurring activators of gene expression via the pregnane X receptor},
  year      = {2004},
}