%0 Journal Article %T Two spinel populations from the Cretaceous-Paleogene K/T boundary clay layer in the Gams stratigraphic sequence, Eastern Alps %A Grachev, A.F. %A Tselmovich, V.A. %A Korchagin, O.A. %A Kollmann, H.A. %K K/T boundary, spinel, impact, Eastern Alps. %J Russian Journal of Earth Sciences %D 2007 %N 9 %P 10 %I Geophysical Center of the Russian Academy of Sciences