Columbia subject headings:
Astrophysics--Congresses.
Stars--Evolution--Congresses.
Supernova 1987A--Congresses.
Supernovae--Congresses.
Harvard subject headings:
Pulsars--Congresses.
Stars--Evolution--Congresses
Supernova 1987A--Congresses.
Supernovae--Congresses
Princeton subject headings:
Astrophysics--Congresses.
Stars--Evolution--Congresses.
Supernova 1987A--Congresses.
Supernovae--Congresses.