Reference

Volker Höck, Gudrun Daxner-Höck [Daxner], Hans Peter Schmid, Demchig Badamgarav, Wolfgang Frank, Gert Furtmüller, Oliver Montag, Rinchen Barsbold, Y. Khand, J. Sodov (1997): Oligocene-Miocene sediments, fossils and basalts age dating from the Valley of Lakes (Central Mongolia) - An integrated study. – Austrian Journal of Earth Sciences – 90: 83 - 125.