Reference
Björn Machalett, Eric A. Oches, Manfred Frechen, Tin Lukic, Slobodan Markovic, Ludwig Zoeller (2008): Amino Acid Geochronology as an Independent Test of Numerical Dating Methods Applied to Serbian, Romanian and Central Asian Loess Deposits – Abhandlungen der Geologischen Bundesanstalt in Wien – 62: 197 - 198.