Internet, www.autorities.loc.gov, 2005-01-11
Leap into darkness : seven years on the run in wartime Europe / Leo Bretholz, Michael
Olesker. -New Yor : Anchor Books, 1999
wikipedia.org, 2014-03-23
Information trouvée : Leo Bretholz (March 6, 1921 – March 8, 2014) was a Holocaust survivor who, in 1942,
escaped from a train heading for Auschwitz