@article{Grachev2007two,
author={Grachev, A.F. and Tselmovich, V.A. and Korchagin, O.A. and Kollmann, H.A.},
title={Two spinel populations from the Cretaceous-Paleogene K/T boundary clay layer in the Gams stratigraphic sequence, Eastern Alps},
journal={Russian Journal of Earth Sciences},
publisher={Geophysical Center of the Russian Academy of Sciences},
year={2007},
pages={1-11},
volume={9},
issue={2},
}