TY  - RPRT
TI  - Mass extinctions and supernova explosions.
AU  - P J Crutzen
AU  - C Brühl
PY  - 1996
DO  - 10.1073/pnas.93.4.1582
UR  - https://pubmed.ncbi.nlm.nih.gov/11607631/
ID  - 11607631
ER  -