@article{Humpert:1219,
      author        = "N. Humpert",
      title         = "{HIV Uund AIDS: Eine Globale Herausforderung. Arbeitshilfe
                       Zum globalen lernen an sekundarstufe 1 (HIV and AIDS: A
                       Global Challenge. Work to help global learning at secondary
                       level 1)}",
      year          = "2009",
}