@mastersthesis{MS-Thesis_2011_PenaMarin,
  address = {Medell{\'{i}}n, Antioquia, Colombia},
  author = {Pe{\~{n}}a Mar{\'{i}}n, Vanessa},
  school = {Universidad Nacional De Colombia},
  title = {{Dose Assessment Method for Ingestion of Polonium, Bismuth and Lead As Naturally Occurring Radioactive Materials}},
  url = {https://repositorio.unal.edu.co/handle/unal/9819},
  year = {2011}
}