TY  - RPRT
TI  - The debate over the Cretaceous-Tertiary boundary
AU  - Alvarez, W.
AU  - Asaro, F.
AU  - Alvarez, L. W.
AU  - Michel, H. V.
PY  - 1988
UR  - https://ntrs.nasa.gov/citations/19890011917
ID  - 19890011917
ER  -