TY  - RPRT
TI  - Comment on "Impact ejecta layer from the mid-Devonian: possible connection to global mass extinctions".
AU  - Grzegorz Racki
AU  - Christian Koeberl
PY  - 2004
DO  - 10.1126/science.303.5657.471a
UR  - https://pubmed.ncbi.nlm.nih.gov/14739442/
ID  - 14739442
ER  -