@article{SteinhagenSiemannBuescheretal.2000,
  author    = {Beate Steinhagen and A. Siemann and Ulrich B{\"u}scher and Joachim W. Dudenhausen and Florian J. Schweigert},
  title     = {Carotenoids, retinol and tocopherol in plasma and follicular fluid of women},
  year      = {2000},
}