Columbia subject headings:
Astrophysics--Congresses.
Extrasolar planets--Congresses.
Integrated optics--Congresses.
Harvard subject headings:
Astrophysics--Congresses
Extrasolar planets--Congresses
Galaxies--Congresses
Gravitational lenses--Congresses.
Microlensing (Astrophysics)--Congresses.
Princeton subject headings:
Astrophysics--Congresses.
Extrasolar planets--Congresses.
Galaxies--Congresses.
Gravitational lenses--Congresses.
Integrated optics--Congresses.